linux-surface/patches/4.19/0007-wifi.patch

From e0bcc29f91b8ed15b0f7611b31c773ba64447358 Mon Sep 17 00:00:00 2001
From: Chuhong Yuan <hslester96@gmail.com>
Date: Wed, 24 Jul 2019 19:27:45 +0800
Subject: [PATCH] mwifiex: pcie: Use dev_get_drvdata

Instead of using to_pci_dev + pci_get_drvdata,
use dev_get_drvdata to make code simpler.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

(cherry picked from commit ffa4d78cbc2644b4867b8129b3fbb5ddcdfcdba2)
Reason for cherry-picking this commit:
  to avoid conflicts when backporting incoming commits
Signed-off-by: Tsuchiya Yuto (kitakar5525) <kitakar@gmail.com>
Patchset: wifi
---
 drivers/net/wireless/marvell/mwifiex/pcie.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 5907b34037c2..4e655038e3f3 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -150,10 +150,8 @@ static bool mwifiex_pcie_ok_to_access_hw(struct mwifiex_adapter *adapter)
 static int mwifiex_pcie_suspend(struct device *dev)
 {
 	struct mwifiex_adapter *adapter;
-	struct pcie_service_card *card;
-	struct pci_dev *pdev = to_pci_dev(dev);
+	struct pcie_service_card *card = dev_get_drvdata(dev);
 
-	card = pci_get_drvdata(pdev);
 
 	/* Might still be loading firmware */
 	wait_for_completion(&card->fw_done);
@@ -195,10 +193,8 @@ static int mwifiex_pcie_suspend(struct device *dev)
 static int mwifiex_pcie_resume(struct device *dev)
 {
 	struct mwifiex_adapter *adapter;
-	struct pcie_service_card *card;
-	struct pci_dev *pdev = to_pci_dev(dev);
+	struct pcie_service_card *card = dev_get_drvdata(dev);
 
-	card = pci_get_drvdata(pdev);
 
 	if (!card->adapter) {
 		dev_err(dev, "adapter structure is not valid\n");
-- 
2.31.1

From 25d84e2b6bdc2a118717477cc0ad8524ccf07266 Mon Sep 17 00:00:00 2001
From: Tsuchiya Yuto <kitakar@gmail.com>
Date: Mon, 28 Sep 2020 17:46:49 +0900
Subject: [PATCH] mwifiex: pcie: add DMI-based quirk impl for Surface devices

This commit adds quirk implementation based on DMI matching with DMI
table for Surface devices.

This implementation can be used for quirks later.

Signed-off-by: Tsuchiya Yuto <kitakar@gmail.com>
Patchset: wifi
---
 drivers/net/wireless/marvell/mwifiex/Makefile |   1 +
 drivers/net/wireless/marvell/mwifiex/pcie.c   |   4 +
 drivers/net/wireless/marvell/mwifiex/pcie.h   |   1 +
 .../wireless/marvell/mwifiex/pcie_quirks.c    | 114 ++++++++++++++++++
 .../wireless/marvell/mwifiex/pcie_quirks.h    |  11 ++
 5 files changed, 131 insertions(+)
 create mode 100644 drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
 create mode 100644 drivers/net/wireless/marvell/mwifiex/pcie_quirks.h

diff --git a/drivers/net/wireless/marvell/mwifiex/Makefile b/drivers/net/wireless/marvell/mwifiex/Makefile
index fdfd9bf15ed4..8a1e7c5b9c6e 100644
--- a/drivers/net/wireless/marvell/mwifiex/Makefile
+++ b/drivers/net/wireless/marvell/mwifiex/Makefile
@@ -49,6 +49,7 @@ mwifiex_sdio-y += sdio.o
 obj-$(CONFIG_MWIFIEX_SDIO) += mwifiex_sdio.o
 
 mwifiex_pcie-y += pcie.o
+mwifiex_pcie-y += pcie_quirks.o
 obj-$(CONFIG_MWIFIEX_PCIE) += mwifiex_pcie.o
 
 mwifiex_usb-y += usb.o
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 4e655038e3f3..d56c9d7f36bd 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -27,6 +27,7 @@
 #include "wmm.h"
 #include "11n.h"
 #include "pcie.h"
+#include "pcie_quirks.h"
 
 #define PCIE_VERSION	"1.0"
 #define DRV_NAME        "Marvell mwifiex PCIe"
@@ -261,6 +262,9 @@ static int mwifiex_pcie_probe(struct pci_dev *pdev,
 			return ret;
 	}
 
+	/* check quirks */
+	mwifiex_initialize_quirks(card);
+
 	if (mwifiex_add_card(card, &card->fw_done, &pcie_ops,
 			     MWIFIEX_PCIE, &pdev->dev)) {
 		pr_err("%s failed\n", __func__);
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.h b/drivers/net/wireless/marvell/mwifiex/pcie.h
index 72d0c01ff359..f7e968306a0c 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.h
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.h
@@ -393,6 +393,7 @@ struct pcie_service_card {
 	unsigned long work_flags;
 
 	bool pci_reset_ongoing;
+	unsigned long quirks;
 };
 
 static inline int
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
new file mode 100644
index 000000000000..929aee2b0a60
--- /dev/null
+++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
@@ -0,0 +1,114 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * File for PCIe quirks.
+ */
+
+/* The low-level PCI operations will be performed in this file. Therefore,
+ * let's use dev_*() instead of mwifiex_dbg() here to avoid troubles (e.g.
+ * to avoid using mwifiex_adapter struct before init or wifi is powered
+ * down, or causes NULL ptr deref).
+ */
+
+#include <linux/dmi.h>
+
+#include "pcie_quirks.h"
+
+/* quirk table based on DMI matching */
+static const struct dmi_system_id mwifiex_quirk_table[] = {
+	{
+		.ident = "Surface Pro 4",
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 4"),
+		},
+		.driver_data = 0,
+	},
+	{
+		.ident = "Surface Pro 5",
+		.matches = {
+			/* match for SKU here due to generic product name "Surface Pro" */
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1796"),
+		},
+		.driver_data = 0,
+	},
+	{
+		.ident = "Surface Pro 5 (LTE)",
+		.matches = {
+			/* match for SKU here due to generic product name "Surface Pro" */
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1807"),
+		},
+		.driver_data = 0,
+	},
+	{
+		.ident = "Surface Pro 6",
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 6"),
+		},
+		.driver_data = 0,
+	},
+	{
+		.ident = "Surface Book 1",
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book"),
+		},
+		.driver_data = 0,
+	},
+	{
+		.ident = "Surface Book 2",
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book 2"),
+		},
+		.driver_data = 0,
+	},
+	{
+		.ident = "Surface Laptop 1",
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop"),
+		},
+		.driver_data = 0,
+	},
+	{
+		.ident = "Surface Laptop 2",
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop 2"),
+		},
+		.driver_data = 0,
+	},
+	{
+		.ident = "Surface 3",
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface 3"),
+		},
+		.driver_data = 0,
+	},
+	{
+		.ident = "Surface Pro 3",
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 3"),
+		},
+		.driver_data = 0,
+	},
+	{}
+};
+
+void mwifiex_initialize_quirks(struct pcie_service_card *card)
+{
+	struct pci_dev *pdev = card->dev;
+	const struct dmi_system_id *dmi_id;
+
+	dmi_id = dmi_first_match(mwifiex_quirk_table);
+	if (dmi_id)
+		card->quirks = (uintptr_t)dmi_id->driver_data;
+
+	if (!card->quirks)
+		dev_info(&pdev->dev, "no quirks enabled\n");
+}
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h
new file mode 100644
index 000000000000..5326ae7e5671
--- /dev/null
+++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Header file for PCIe quirks.
+ */
+
+#include "pcie.h"
+
+/* quirks */
+// quirk flags can be added here
+
+void mwifiex_initialize_quirks(struct pcie_service_card *card);
-- 
2.31.1

From 94e02e6bd4d4a8017f3d8ff6336873ef5f46e36f Mon Sep 17 00:00:00 2001
From: Tsuchiya Yuto <kitakar@gmail.com>
Date: Tue, 29 Sep 2020 17:25:22 +0900
Subject: [PATCH] mwifiex: pcie: add reset_d3cold quirk for Surface gen4+
 devices

To reset mwifiex on Surface gen4+ (Pro 4 or later gen) devices, it
seems that putting the wifi device into D3cold is required according
to errata.inf file on Windows installation (Windows/INF/errata.inf).

This patch adds a function that performs power-cycle (put into D3cold
then D0) and call the function at the end of reset_prepare().

Note: Need to also reset the parent device (bridge) of wifi on SB1;
it might be because the bridge of wifi always reports it's in D3hot.
When I tried to reset only the wifi device (not touching parent), it gave
the following error and the reset failed:

    acpi device:4b: Cannot transition to power state D0 for parent in D3hot
    mwifiex_pcie 0000:03:00.0: can't change power state from D3cold to D0 (config space inaccessible)

Signed-off-by: Tsuchiya Yuto <kitakar@gmail.com>
Patchset: wifi
---
 drivers/net/wireless/marvell/mwifiex/pcie.c   |  7 ++
 .../wireless/marvell/mwifiex/pcie_quirks.c    | 73 +++++++++++++++++--
 .../wireless/marvell/mwifiex/pcie_quirks.h    |  3 +-
 3 files changed, 74 insertions(+), 9 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index d56c9d7f36bd..408fe05b9384 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -380,6 +380,13 @@ static void mwifiex_pcie_reset_prepare(struct pci_dev *pdev)
 	mwifiex_shutdown_sw(adapter);
 	clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &card->work_flags);
 	clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags);
+
+	/* For Surface gen4+ devices, we need to put wifi into D3cold right
+	 * before performing FLR
+	 */
+	if (card->quirks & QUIRK_FW_RST_D3COLD)
+		mwifiex_pcie_reset_d3cold_quirk(pdev);
+
 	mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
 
 	card->pci_reset_ongoing = true;
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
index 929aee2b0a60..edc739c542fe 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
@@ -21,7 +21,7 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 4"),
 		},
-		.driver_data = 0,
+		.driver_data = (void *)QUIRK_FW_RST_D3COLD,
 	},
 	{
 		.ident = "Surface Pro 5",
@@ -30,7 +30,7 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1796"),
 		},
-		.driver_data = 0,
+		.driver_data = (void *)QUIRK_FW_RST_D3COLD,
 	},
 	{
 		.ident = "Surface Pro 5 (LTE)",
@@ -39,7 +39,7 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1807"),
 		},
-		.driver_data = 0,
+		.driver_data = (void *)QUIRK_FW_RST_D3COLD,
 	},
 	{
 		.ident = "Surface Pro 6",
@@ -47,7 +47,7 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 6"),
 		},
-		.driver_data = 0,
+		.driver_data = (void *)QUIRK_FW_RST_D3COLD,
 	},
 	{
 		.ident = "Surface Book 1",
@@ -55,7 +55,7 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book"),
 		},
-		.driver_data = 0,
+		.driver_data = (void *)QUIRK_FW_RST_D3COLD,
 	},
 	{
 		.ident = "Surface Book 2",
@@ -63,7 +63,7 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book 2"),
 		},
-		.driver_data = 0,
+		.driver_data = (void *)QUIRK_FW_RST_D3COLD,
 	},
 	{
 		.ident = "Surface Laptop 1",
@@ -71,7 +71,7 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop"),
 		},
-		.driver_data = 0,
+		.driver_data = (void *)QUIRK_FW_RST_D3COLD,
 	},
 	{
 		.ident = "Surface Laptop 2",
@@ -79,7 +79,7 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop 2"),
 		},
-		.driver_data = 0,
+		.driver_data = (void *)QUIRK_FW_RST_D3COLD,
 	},
 	{
 		.ident = "Surface 3",
@@ -111,4 +111,61 @@ void mwifiex_initialize_quirks(struct pcie_service_card *card)
 
 	if (!card->quirks)
 		dev_info(&pdev->dev, "no quirks enabled\n");
+	if (card->quirks & QUIRK_FW_RST_D3COLD)
+		dev_info(&pdev->dev, "quirk reset_d3cold enabled\n");
+}
+
+static void mwifiex_pcie_set_power_d3cold(struct pci_dev *pdev)
+{
+	dev_info(&pdev->dev, "putting into D3cold...\n");
+
+	pci_save_state(pdev);
+	if (pci_is_enabled(pdev))
+		pci_disable_device(pdev);
+	pci_set_power_state(pdev, PCI_D3cold);
+}
+
+static int mwifiex_pcie_set_power_d0(struct pci_dev *pdev)
+{
+	int ret;
+
+	dev_info(&pdev->dev, "putting into D0...\n");
+
+	pci_set_power_state(pdev, PCI_D0);
+	ret = pci_enable_device(pdev);
+	if (ret) {
+		dev_err(&pdev->dev, "pci_enable_device failed\n");
+		return ret;
+	}
+	pci_restore_state(pdev);
+
+	return 0;
+}
+
+int mwifiex_pcie_reset_d3cold_quirk(struct pci_dev *pdev)
+{
+	struct pci_dev *parent_pdev = pci_upstream_bridge(pdev);
+	int ret;
+
+	/* Power-cycle (put into D3cold then D0) */
+	dev_info(&pdev->dev, "Using reset_d3cold quirk to perform FW reset\n");
+
+	/* We need to perform power-cycle also for bridge of wifi because
+	 * on some devices (e.g. Surface Book 1), the OS for some reasons
+	 * can't know the real power state of the bridge.
+	 * When tried to power-cycle only wifi, the reset failed with the
+	 * following dmesg log:
+	 * "Cannot transition to power state D0 for parent in D3hot".
+	 */
+	mwifiex_pcie_set_power_d3cold(pdev);
+	mwifiex_pcie_set_power_d3cold(parent_pdev);
+
+	ret = mwifiex_pcie_set_power_d0(parent_pdev);
+	if (ret)
+		return ret;
+	ret = mwifiex_pcie_set_power_d0(pdev);
+	if (ret)
+		return ret;
+
+	return 0;
 }
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h
index 5326ae7e5671..8b9dcb5070d8 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h
+++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h
@@ -6,6 +6,7 @@
 #include "pcie.h"
 
 /* quirks */
-// quirk flags can be added here
+#define QUIRK_FW_RST_D3COLD	BIT(0)
 
 void mwifiex_initialize_quirks(struct pcie_service_card *card);
+int mwifiex_pcie_reset_d3cold_quirk(struct pci_dev *pdev);
-- 
2.31.1

From 8cbafb423098c9c19014854564167d1b3a38ddb8 Mon Sep 17 00:00:00 2001
From: Tsuchiya Yuto <kitakar@gmail.com>
Date: Tue, 29 Sep 2020 17:32:22 +0900
Subject: [PATCH] mwifiex: pcie: add reset_wsid quirk for Surface 3

This commit adds reset_wsid quirk and uses this quirk for Surface 3 on
card reset.

To reset mwifiex on Surface 3, it seems that calling the _DSM method
exists in \_SB.WSID [1] device is required.

On Surface 3, calling the _DSM method removes/re-probes the card by
itself. So, need to place the reset function before performing FLR and
skip performing any other reset-related works.

Note that Surface Pro 3 also has the WSID device [2], but it seems to need
more work. This commit only supports Surface 3 yet.

[1] https://github.com/linux-surface/acpidumps/blob/05cba925f3a515f222acb5b3551a032ddde958fe/surface_3/dsdt.dsl#L11947-L12011
[2] https://github.com/linux-surface/acpidumps/blob/05cba925f3a515f222acb5b3551a032ddde958fe/surface_pro_3/dsdt.dsl#L12164-L12216

Signed-off-by: Tsuchiya Yuto <kitakar@gmail.com>
Patchset: wifi
---
 drivers/net/wireless/marvell/mwifiex/pcie.c   | 10 +++
 .../wireless/marvell/mwifiex/pcie_quirks.c    | 77 ++++++++++++++++++-
 .../wireless/marvell/mwifiex/pcie_quirks.h    |  5 ++
 3 files changed, 91 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 408fe05b9384..290427c98630 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -2817,6 +2817,16 @@ static void mwifiex_pcie_card_reset_work(struct mwifiex_adapter *adapter)
 {
 	struct pcie_service_card *card = adapter->card;
 
+	/* On Surface 3, reset_wsid method removes then re-probes card by
+	 * itself. So, need to place it here and skip performing any other
+	 * reset-related works.
+	 */
+	if (card->quirks & QUIRK_FW_RST_WSID_S3) {
+		mwifiex_pcie_reset_wsid_quirk(card->dev);
+		/* skip performing any other reset-related works */
+		return;
+	}
+
 	/* We can't afford to wait here; remove() might be waiting on us. If we
 	 * can't grab the device lock, maybe we'll get another chance later.
 	 */
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
index edc739c542fe..f0a6fa0a7ae5 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
@@ -9,10 +9,21 @@
  * down, or causes NULL ptr deref).
  */
 
+#include <linux/acpi.h>
 #include <linux/dmi.h>
 
 #include "pcie_quirks.h"
 
+/* For reset_wsid quirk */
+#define ACPI_WSID_PATH		"\\_SB.WSID"
+#define WSID_REV		0x0
+#define WSID_FUNC_WIFI_PWR_OFF	0x1
+#define WSID_FUNC_WIFI_PWR_ON	0x2
+/* WSID _DSM UUID: "534ea3bf-fcc2-4e7a-908f-a13978f0c7ef" */
+static const guid_t wsid_dsm_guid =
+	GUID_INIT(0x534ea3bf, 0xfcc2, 0x4e7a,
+		  0x90, 0x8f, 0xa1, 0x39, 0x78, 0xf0, 0xc7, 0xef);
+
 /* quirk table based on DMI matching */
 static const struct dmi_system_id mwifiex_quirk_table[] = {
 	{
@@ -87,7 +98,7 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface 3"),
 		},
-		.driver_data = 0,
+		.driver_data = (void *)QUIRK_FW_RST_WSID_S3,
 	},
 	{
 		.ident = "Surface Pro 3",
@@ -113,6 +124,9 @@ void mwifiex_initialize_quirks(struct pcie_service_card *card)
 		dev_info(&pdev->dev, "no quirks enabled\n");
 	if (card->quirks & QUIRK_FW_RST_D3COLD)
 		dev_info(&pdev->dev, "quirk reset_d3cold enabled\n");
+	if (card->quirks & QUIRK_FW_RST_WSID_S3)
+		dev_info(&pdev->dev,
+			 "quirk reset_wsid for Surface 3 enabled\n");
 }
 
 static void mwifiex_pcie_set_power_d3cold(struct pci_dev *pdev)
@@ -169,3 +183,64 @@ int mwifiex_pcie_reset_d3cold_quirk(struct pci_dev *pdev)
 
 	return 0;
 }
+
+int mwifiex_pcie_reset_wsid_quirk(struct pci_dev *pdev)
+{
+	acpi_handle handle;
+	union acpi_object *obj;
+	acpi_status status;
+
+	dev_info(&pdev->dev, "Using reset_wsid quirk to perform FW reset\n");
+
+	status = acpi_get_handle(NULL, ACPI_WSID_PATH, &handle);
+	if (ACPI_FAILURE(status)) {
+		dev_err(&pdev->dev, "No ACPI handle for path %s\n",
+			ACPI_WSID_PATH);
+		return -ENODEV;
+	}
+
+	if (!acpi_has_method(handle, "_DSM")) {
+		dev_err(&pdev->dev, "_DSM method not found\n");
+		return -ENODEV;
+	}
+
+	if (!acpi_check_dsm(handle, &wsid_dsm_guid,
+			    WSID_REV, WSID_FUNC_WIFI_PWR_OFF)) {
+		dev_err(&pdev->dev,
+			"_DSM method doesn't support wifi power off func\n");
+		return -ENODEV;
+	}
+
+	if (!acpi_check_dsm(handle, &wsid_dsm_guid,
+			    WSID_REV, WSID_FUNC_WIFI_PWR_ON)) {
+		dev_err(&pdev->dev,
+			"_DSM method doesn't support wifi power on func\n");
+		return -ENODEV;
+	}
+
+	/* card will be removed immediately after this call on Surface 3 */
+	dev_info(&pdev->dev, "turning wifi off...\n");
+	obj = acpi_evaluate_dsm(handle, &wsid_dsm_guid,
+				WSID_REV, WSID_FUNC_WIFI_PWR_OFF,
+				NULL);
+	if (!obj) {
+		dev_err(&pdev->dev,
+			"device _DSM execution failed for turning wifi off\n");
+		return -EIO;
+	}
+	ACPI_FREE(obj);
+
+	/* card will be re-probed immediately after this call on Surface 3 */
+	dev_info(&pdev->dev, "turning wifi on...\n");
+	obj = acpi_evaluate_dsm(handle, &wsid_dsm_guid,
+				WSID_REV, WSID_FUNC_WIFI_PWR_ON,
+				NULL);
+	if (!obj) {
+		dev_err(&pdev->dev,
+			"device _DSM execution failed for turning wifi on\n");
+		return -EIO;
+	}
+	ACPI_FREE(obj);
+
+	return 0;
+}
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h
index 8b9dcb5070d8..3ef7440418e3 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h
+++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h
@@ -7,6 +7,11 @@
 
 /* quirks */
 #define QUIRK_FW_RST_D3COLD	BIT(0)
+/* Surface 3 and Surface Pro 3 have the same _DSM method but need to
+ * be handled differently. Currently, only S3 is supported.
+ */
+#define QUIRK_FW_RST_WSID_S3	BIT(1)
 
 void mwifiex_initialize_quirks(struct pcie_service_card *card);
 int mwifiex_pcie_reset_d3cold_quirk(struct pci_dev *pdev);
+int mwifiex_pcie_reset_wsid_quirk(struct pci_dev *pdev);
-- 
2.31.1

From e42f6a01a7df6a9a72aebd65901c7eef31407299 Mon Sep 17 00:00:00 2001
From: Tsuchiya Yuto <kitakar@gmail.com>
Date: Wed, 30 Sep 2020 18:08:24 +0900
Subject: [PATCH] mwifiex: pcie: (OEMB) add quirk for Surface 3 with broken DMI
 table

(made referring to http://git.osdn.net/view?p=android-x86/kernel.git;a=commitdiff;h=18e2e857c57633b25b3b4120f212224a108cd883)

On some Surface 3, the DMI table gets corrupted for unknown reasons
and breaks existing DMI matching used for device-specific quirks.

This commit adds the (broken) DMI info for the affected Surface 3.

On affected systems, DMI info will look like this:
    $ grep . /sys/devices/virtual/dmi/id/{bios_vendor,board_name,board_vendor,\
    chassis_vendor,product_name,sys_vendor}
    /sys/devices/virtual/dmi/id/bios_vendor:American Megatrends Inc.
    /sys/devices/virtual/dmi/id/board_name:OEMB
    /sys/devices/virtual/dmi/id/board_vendor:OEMB
    /sys/devices/virtual/dmi/id/chassis_vendor:OEMB
    /sys/devices/virtual/dmi/id/product_name:OEMB
    /sys/devices/virtual/dmi/id/sys_vendor:OEMB

Expected:
    $ grep . /sys/devices/virtual/dmi/id/{bios_vendor,board_name,board_vendor,\
    chassis_vendor,product_name,sys_vendor}
    /sys/devices/virtual/dmi/id/bios_vendor:American Megatrends Inc.
    /sys/devices/virtual/dmi/id/board_name:Surface 3
    /sys/devices/virtual/dmi/id/board_vendor:Microsoft Corporation
    /sys/devices/virtual/dmi/id/chassis_vendor:Microsoft Corporation
    /sys/devices/virtual/dmi/id/product_name:Surface 3
    /sys/devices/virtual/dmi/id/sys_vendor:Microsoft Corporation

Signed-off-by: Tsuchiya Yuto <kitakar@gmail.com>
Patchset: wifi
---
 drivers/net/wireless/marvell/mwifiex/pcie_quirks.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
index f0a6fa0a7ae5..34dcd84f02a6 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
@@ -100,6 +100,15 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 		},
 		.driver_data = (void *)QUIRK_FW_RST_WSID_S3,
 	},
+	{
+		.ident = "Surface 3",
+		.matches = {
+			DMI_EXACT_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."),
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "OEMB"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "OEMB"),
+		},
+		.driver_data = (void *)QUIRK_FW_RST_WSID_S3,
+	},
 	{
 		.ident = "Surface Pro 3",
 		.matches = {
-- 
2.31.1

From fb4379da8742af3aac84aa947883c18678500a7b Mon Sep 17 00:00:00 2001
From: Tsuchiya Yuto <kitakar@gmail.com>
Date: Sun, 4 Oct 2020 00:11:49 +0900
Subject: [PATCH] mwifiex: pcie: disable bridge_d3 for Surface gen4+

Currently, mwifiex fw will crash after suspend on recent kernel series.
On Windows, it seems that the root port of wifi will never enter D3 state
(stay on D0 state). And on Linux, disabling the D3 state for the
bridge fixes fw crashing after suspend.

This commit disables the D3 state of root port on driver initialization
and fixes fw crashing after suspend.

Signed-off-by: Tsuchiya Yuto <kitakar@gmail.com>
Patchset: wifi
---
 drivers/net/wireless/marvell/mwifiex/pcie.c   |  7 +++++
 .../wireless/marvell/mwifiex/pcie_quirks.c    | 27 +++++++++++++------
 .../wireless/marvell/mwifiex/pcie_quirks.h    |  1 +
 3 files changed, 27 insertions(+), 8 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 290427c98630..d0e002cfc295 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -230,6 +230,7 @@ static int mwifiex_pcie_probe(struct pci_dev *pdev,
 					const struct pci_device_id *ent)
 {
 	struct pcie_service_card *card;
+	struct pci_dev *parent_pdev = pci_upstream_bridge(pdev);
 	int ret;
 
 	pr_debug("info: vendor=0x%4.04X device=0x%4.04X rev=%d\n",
@@ -271,6 +272,12 @@ static int mwifiex_pcie_probe(struct pci_dev *pdev,
 		return -1;
 	}
 
+	/* disable bridge_d3 for Surface gen4+ devices to fix fw crashing
+	 * after suspend
+	 */
+	if (card->quirks & QUIRK_NO_BRIDGE_D3)
+		parent_pdev->bridge_d3 = false;
+
 	return 0;
 }
 
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
index 34dcd84f02a6..a2aeb2af907e 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
@@ -32,7 +32,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 4"),
 		},
-		.driver_data = (void *)QUIRK_FW_RST_D3COLD,
+		.driver_data = (void *)(QUIRK_FW_RST_D3COLD |
+					QUIRK_NO_BRIDGE_D3),
 	},
 	{
 		.ident = "Surface Pro 5",
@@ -41,7 +42,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1796"),
 		},
-		.driver_data = (void *)QUIRK_FW_RST_D3COLD,
+		.driver_data = (void *)(QUIRK_FW_RST_D3COLD |
+					QUIRK_NO_BRIDGE_D3),
 	},
 	{
 		.ident = "Surface Pro 5 (LTE)",
@@ -50,7 +52,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1807"),
 		},
-		.driver_data = (void *)QUIRK_FW_RST_D3COLD,
+		.driver_data = (void *)(QUIRK_FW_RST_D3COLD |
+					QUIRK_NO_BRIDGE_D3),
 	},
 	{
 		.ident = "Surface Pro 6",
@@ -58,7 +61,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 6"),
 		},
-		.driver_data = (void *)QUIRK_FW_RST_D3COLD,
+		.driver_data = (void *)(QUIRK_FW_RST_D3COLD |
+					QUIRK_NO_BRIDGE_D3),
 	},
 	{
 		.ident = "Surface Book 1",
@@ -66,7 +70,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book"),
 		},
-		.driver_data = (void *)QUIRK_FW_RST_D3COLD,
+		.driver_data = (void *)(QUIRK_FW_RST_D3COLD |
+					QUIRK_NO_BRIDGE_D3),
 	},
 	{
 		.ident = "Surface Book 2",
@@ -74,7 +79,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book 2"),
 		},
-		.driver_data = (void *)QUIRK_FW_RST_D3COLD,
+		.driver_data = (void *)(QUIRK_FW_RST_D3COLD |
+					QUIRK_NO_BRIDGE_D3),
 	},
 	{
 		.ident = "Surface Laptop 1",
@@ -82,7 +88,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop"),
 		},
-		.driver_data = (void *)QUIRK_FW_RST_D3COLD,
+		.driver_data = (void *)(QUIRK_FW_RST_D3COLD |
+					QUIRK_NO_BRIDGE_D3),
 	},
 	{
 		.ident = "Surface Laptop 2",
@@ -90,7 +97,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop 2"),
 		},
-		.driver_data = (void *)QUIRK_FW_RST_D3COLD,
+		.driver_data = (void *)(QUIRK_FW_RST_D3COLD |
+					QUIRK_NO_BRIDGE_D3),
 	},
 	{
 		.ident = "Surface 3",
@@ -136,6 +144,9 @@ void mwifiex_initialize_quirks(struct pcie_service_card *card)
 	if (card->quirks & QUIRK_FW_RST_WSID_S3)
 		dev_info(&pdev->dev,
 			 "quirk reset_wsid for Surface 3 enabled\n");
+	if (card->quirks & QUIRK_NO_BRIDGE_D3)
+		dev_info(&pdev->dev,
+			 "quirk no_brigde_d3 enabled\n");
 }
 
 static void mwifiex_pcie_set_power_d3cold(struct pci_dev *pdev)
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h
index 3ef7440418e3..a95ebac06e13 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h
+++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h
@@ -11,6 +11,7 @@
  * be handled differently. Currently, only S3 is supported.
  */
 #define QUIRK_FW_RST_WSID_S3	BIT(1)
+#define QUIRK_NO_BRIDGE_D3	BIT(2)
 
 void mwifiex_initialize_quirks(struct pcie_service_card *card);
 int mwifiex_pcie_reset_d3cold_quirk(struct pci_dev *pdev);
-- 
2.31.1

From a6a98568c627c55302f52af4dfd4cb29f54d20a6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= <verdre@v0yd.nl>
Date: Tue, 10 Nov 2020 12:49:56 +0100
Subject: [PATCH] mwifiex: Use non-posted PCI register writes

On the 88W8897 card it's very important the TX ring write pointer is
updated correctly to its new value before setting the TX ready
interrupt, otherwise the firmware appears to crash (probably because
it's trying to DMA-read from the wrong place).

Since PCI uses "posted writes" when writing to a register, it's not
guaranteed that a write will happen immediately. That means the pointer
might be outdated when setting the TX ready interrupt, leading to
firmware crashes especially when ASPM L1 and L1 substates are enabled
(because of the higher link latency, the write will probably take
longer).

So fix those firmware crashes by always forcing non-posted writes. We do
that by simply reading back the register after writing it, just as a lot
of other drivers do.

There are two reproducers that are fixed with this patch:

1) During rx/tx traffic and with ASPM L1 substates enabled (the enabled
substates are platform dependent), the firmware crashes and eventually a
command timeout appears in the logs. That crash is fixed by using a
non-posted write in mwifiex_pcie_send_data().

2) When sending lots of commands to the card, waking it up from sleep in
very quick intervals, the firmware eventually crashes. That crash
appears to be fixed by some other non-posted write included here.

Patchset: wifi
---
 drivers/net/wireless/marvell/mwifiex/pcie.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index d0e002cfc295..aae276fc1155 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -88,6 +88,12 @@ static int mwifiex_write_reg(struct mwifiex_adapter *adapter, int reg, u32 data)
 
 	iowrite32(data, card->pci_mmap1 + reg);
 
+	/* Do a read-back, which makes the write non-posted, ensuring the
+	 * completion before returning.
+	 * The firmware of the 88W8897 card is buggy and this avoids crashes.
+	 */
+	ioread32(card->pci_mmap1 + reg);
+
 	return 0;
 }
 
-- 
2.31.1

From 60368a2865bcd77e2310d7df94a7cb174aca0c8b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= <verdre@v0yd.nl>
Date: Tue, 3 Nov 2020 13:28:04 +0100
Subject: [PATCH] mwifiex: Add quirk resetting the PCI bridge on MS Surface
 devices

The most recent firmware of the 88W8897 card reports a hardcoded LTR
value to the system during initialization, probably as an (unsuccessful)
attempt of the developers to fix firmware crashes. This LTR value
prevents most of the Microsoft Surface devices from entering deep
powersaving states (either platform C-State 10 or S0ix state), because
the exit latency of that state would be higher than what the card can
tolerate.

Turns out the card works just the same (including the firmware crashes)
no matter if that hardcoded LTR value is reported or not, so it's kind
of useless and only prevents us from saving power.

To get rid of those hardcoded LTR reports, it's possible to reset the
PCI bridge device after initializing the cards firmware. I'm not exactly
sure why that works, maybe the power management subsystem of the PCH
resets its stored LTR values when doing a function level reset of the
bridge device. Doing the reset once after starting the wifi firmware
works very well, probably because the firmware only reports that LTR
value a single time during firmware startup.

Patchset: wifi
---
 drivers/net/wireless/marvell/mwifiex/pcie.c   | 12 +++++++++
 .../wireless/marvell/mwifiex/pcie_quirks.c    | 26 +++++++++++++------
 .../wireless/marvell/mwifiex/pcie_quirks.h    |  1 +
 3 files changed, 31 insertions(+), 8 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index aae276fc1155..6b06f2a76cdc 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -1610,9 +1610,21 @@ mwifiex_pcie_send_boot_cmd(struct mwifiex_adapter *adapter, struct sk_buff *skb)
 static int mwifiex_pcie_init_fw_port(struct mwifiex_adapter *adapter)
 {
 	struct pcie_service_card *card = adapter->card;
+	struct pci_dev *pdev = card->dev;
+	struct pci_dev *parent_pdev = pci_upstream_bridge(pdev);
 	const struct mwifiex_pcie_card_reg *reg = card->pcie.reg;
 	int tx_wrap = card->txbd_wrptr & reg->tx_wrap_mask;
 
+	/* Trigger a function level reset of the PCI bridge device, this makes
+	 * the firmware of PCIe 88W8897 cards stop reporting a fixed LTR value
+	 * that prevents the system from entering package C10 and S0ix powersaving
+	 * states.
+	 * We need to do it here because it must happen after firmware
+	 * initialization and this function is called after that is done.
+	 */
+	if (card->quirks & QUIRK_DO_FLR_ON_BRIDGE)
+		pci_reset_function(parent_pdev);
+
 	/* Write the RX ring read pointer in to reg->rx_rdptr */
 	if (mwifiex_write_reg(adapter, reg->rx_rdptr, card->rxbd_rdptr |
 			      tx_wrap)) {
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
index a2aeb2af907e..6885575826a6 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c
@@ -33,7 +33,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 4"),
 		},
 		.driver_data = (void *)(QUIRK_FW_RST_D3COLD |
-					QUIRK_NO_BRIDGE_D3),
+					QUIRK_NO_BRIDGE_D3 |
+					QUIRK_DO_FLR_ON_BRIDGE),
 	},
 	{
 		.ident = "Surface Pro 5",
@@ -43,7 +44,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1796"),
 		},
 		.driver_data = (void *)(QUIRK_FW_RST_D3COLD |
-					QUIRK_NO_BRIDGE_D3),
+					QUIRK_NO_BRIDGE_D3 |
+					QUIRK_DO_FLR_ON_BRIDGE),
 	},
 	{
 		.ident = "Surface Pro 5 (LTE)",
@@ -53,7 +55,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1807"),
 		},
 		.driver_data = (void *)(QUIRK_FW_RST_D3COLD |
-					QUIRK_NO_BRIDGE_D3),
+					QUIRK_NO_BRIDGE_D3 |
+					QUIRK_DO_FLR_ON_BRIDGE),
 	},
 	{
 		.ident = "Surface Pro 6",
@@ -62,7 +65,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 6"),
 		},
 		.driver_data = (void *)(QUIRK_FW_RST_D3COLD |
-					QUIRK_NO_BRIDGE_D3),
+					QUIRK_NO_BRIDGE_D3 |
+					QUIRK_DO_FLR_ON_BRIDGE),
 	},
 	{
 		.ident = "Surface Book 1",
@@ -71,7 +75,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book"),
 		},
 		.driver_data = (void *)(QUIRK_FW_RST_D3COLD |
-					QUIRK_NO_BRIDGE_D3),
+					QUIRK_NO_BRIDGE_D3 |
+					QUIRK_DO_FLR_ON_BRIDGE),
 	},
 	{
 		.ident = "Surface Book 2",
@@ -80,7 +85,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book 2"),
 		},
 		.driver_data = (void *)(QUIRK_FW_RST_D3COLD |
-					QUIRK_NO_BRIDGE_D3),
+					QUIRK_NO_BRIDGE_D3 |
+					QUIRK_DO_FLR_ON_BRIDGE),
 	},
 	{
 		.ident = "Surface Laptop 1",
@@ -89,7 +95,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop"),
 		},
 		.driver_data = (void *)(QUIRK_FW_RST_D3COLD |
-					QUIRK_NO_BRIDGE_D3),
+					QUIRK_NO_BRIDGE_D3 |
+					QUIRK_DO_FLR_ON_BRIDGE),
 	},
 	{
 		.ident = "Surface Laptop 2",
@@ -98,7 +105,8 @@ static const struct dmi_system_id mwifiex_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop 2"),
 		},
 		.driver_data = (void *)(QUIRK_FW_RST_D3COLD |
-					QUIRK_NO_BRIDGE_D3),
+					QUIRK_NO_BRIDGE_D3 |
+					QUIRK_DO_FLR_ON_BRIDGE),
 	},
 	{
 		.ident = "Surface 3",
@@ -147,6 +155,8 @@ void mwifiex_initialize_quirks(struct pcie_service_card *card)
 	if (card->quirks & QUIRK_NO_BRIDGE_D3)
 		dev_info(&pdev->dev,
 			 "quirk no_brigde_d3 enabled\n");
+	if (card->quirks & QUIRK_DO_FLR_ON_BRIDGE)
+		dev_info(&pdev->dev, "quirk do_flr_on_bridge enabled\n");
 }
 
 static void mwifiex_pcie_set_power_d3cold(struct pci_dev *pdev)
diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h
index a95ebac06e13..4ec2ae72f632 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h
+++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h
@@ -12,6 +12,7 @@
  */
 #define QUIRK_FW_RST_WSID_S3	BIT(1)
 #define QUIRK_NO_BRIDGE_D3	BIT(2)
+#define QUIRK_DO_FLR_ON_BRIDGE	BIT(3)
 
 void mwifiex_initialize_quirks(struct pcie_service_card *card);
 int mwifiex_pcie_reset_d3cold_quirk(struct pci_dev *pdev);
-- 
2.31.1

From 83ae97bafca23ecfdc1aa6c419fc0d5cc7e03087 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= <verdre@v0yd.nl>
Date: Sun, 28 Mar 2021 21:10:06 +0200
Subject: [PATCH] mwifiex: Try waking the firmware until we get an interrupt

It seems that the firmware of the 88W8897 card sometimes ignores or
misses when we try to wake it up by reading the firmware status
register. This leads to the firmware wakeup timeout expiring and the
driver resetting the card because we assume the firmware has hung up or
crashed (unfortunately that's not unlikely with this card).

Turns out that most of the time the firmware actually didn't hang up,
but simply "missed" our wakeup request and doesn't send us an AWAKE
event.

Trying again to read the firmware status register after a short timeout
usually makes the firmware wake we up as expected, so add a small retry
loop to mwifiex_pm_wakeup_card() that looks at the interrupt status to
check whether the card woke up.

The number of tries and timeout lengths for this were determined
experimentally: The firmware usually takes about 500 us to wake up
after we attempt to read the status register. In some cases where the
firmware is very busy (for example while doing a bluetooth scan) it
might even miss our requests for multiple milliseconds, which is why
after 15 tries the waiting time gets increased to 10 ms. The maximum
number of tries it took to wake the firmware when testing this was
around 20, so a maximum number of 50 tries should give us plenty of
safety margin.

A good reproducer for this issue is letting the firmware sleep and wake
up in very short intervals, for example by pinging an device on the
network every 0.1 seconds.

Patchset: wifi
---
 drivers/net/wireless/marvell/mwifiex/pcie.c | 29 ++++++++++++++++-----
 1 file changed, 23 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c
index 6b06f2a76cdc..45dc0bfe26ba 100644
--- a/drivers/net/wireless/marvell/mwifiex/pcie.c
+++ b/drivers/net/wireless/marvell/mwifiex/pcie.c
@@ -518,6 +518,7 @@ static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
 {
 	struct pcie_service_card *card = adapter->card;
 	const struct mwifiex_pcie_card_reg *reg = card->pcie.reg;
+	int n_tries = 0;
 
 	mwifiex_dbg(adapter, EVENT,
 		    "event: Wakeup device...\n");
@@ -525,12 +526,28 @@ static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
 	if (reg->sleep_cookie)
 		mwifiex_pcie_dev_wakeup_delay(adapter);
 
-	/* Accessing fw_status register will wakeup device */
-	if (mwifiex_write_reg(adapter, reg->fw_status, FIRMWARE_READY_PCIE)) {
-		mwifiex_dbg(adapter, ERROR,
-			    "Writing fw_status register failed\n");
-		return -1;
-	}
+	/* Access the fw_status register to wake up the device.
+	 * Since the 88W8897 firmware sometimes appears to ignore or miss
+	 * that wakeup request, we continue trying until we receive an
+	 * interrupt from the card.
+	 */
+	do {
+		if (mwifiex_write_reg(adapter, reg->fw_status, FIRMWARE_READY_PCIE)) {
+			mwifiex_dbg(adapter, ERROR,
+				    "Writing fw_status register failed\n");
+			return -1;
+		}
+
+		n_tries++;
+
+		if (n_tries <= 15)
+			usleep_range(400, 700);
+		else
+			msleep(10);
+	} while (n_tries <= 50 && READ_ONCE(adapter->int_status) == 0);
+
+	mwifiex_dbg(adapter, EVENT,
+		    "event: Tried %d times until firmware woke up\n", n_tries);
 
 	if (reg->sleep_cookie) {
 		mwifiex_pcie_dev_wakeup_delay(adapter);
-- 
2.31.1

From a357a5a68cd9e95a81f5ecb40785cb583472fa6e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= <verdre@v0yd.nl>
Date: Thu, 25 Mar 2021 11:33:02 +0100
Subject: [PATCH] Bluetooth: btusb: Lower passive lescan interval on Marvell
 88W8897

The Marvell 88W8897 combined wifi and bluetooth card (pcie+usb version)
is used in a lot of Microsoft Surface devices, and all those devices
suffer from very low 2.4GHz wifi connection speeds while bluetooth is
enabled. The reason for that is that the default passive scanning
interval for Bluetooth Low Energy devices is quite high in Linux
(interval of 60 msec and scan window of 30 msec, see hci_core.c), and
the Marvell chip is known for its bad bt+wifi coexisting performance.

So decrease that passive scan interval and make the scan window shorter
on this particular device to allow for spending more time transmitting
wifi signals: The new scan interval is 250 msec (0x190 * 0.625 msec) and
the new scan window is 6.25 msec (0xa * 0,625 msec).

This change has a very large impact on the 2.4GHz wifi speeds and gets
it up to performance comparable with the Windows driver, which seems to
apply a similar quirk.

The interval and window length were tested and found to work very well
with a lot of Bluetooth Low Energy devices, including the Surface Pen, a
Bluetooth Speaker and two modern Bluetooth headphones. All devices were
discovered immediately after turning them on. Even lower values were
also tested, but they introduced longer delays until devices get
discovered.

Patchset: wifi
---
 drivers/bluetooth/btusb.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 1b0adf5c2376..283a90928f0e 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -69,6 +69,7 @@ static struct usb_driver btusb_driver;
 #define BTUSB_BCM2045		0x40000
 #define BTUSB_IFNUM_2		0x80000
 #define BTUSB_CW6622		0x100000
+#define BTUSB_LOWER_LESCAN_INTERVAL	0x200000
 
 static const struct usb_device_id btusb_table[] = {
 	/* Generic Bluetooth USB device */
@@ -341,6 +342,7 @@ static const struct usb_device_id blacklist_table[] = {
 	{ USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 	{ USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 	{ USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
+	{ USB_DEVICE(0x1286, 0x204c), .driver_info = BTUSB_LOWER_LESCAN_INTERVAL },
 
 	/* Intel Bluetooth devices */
 	{ USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
@@ -3105,6 +3107,19 @@ static int btusb_probe(struct usb_interface *intf,
 	if (id->driver_info & BTUSB_MARVELL)
 		hdev->set_bdaddr = btusb_set_bdaddr_marvell;
 
+	/* The Marvell 88W8897 combined wifi and bluetooth card is known for
+	 * very bad bt+wifi coexisting performance.
+	 *
+	 * Decrease the passive BT Low Energy scan interval a bit
+	 * (0x0190 * 0.625 msec = 250 msec) and make the scan window shorter
+	 * (0x000a * 0,625 msec = 6.25 msec). This allows for significantly
+	 * higher wifi throughput while passively scanning for BT LE devices.
+	 */
+	if (id->driver_info & BTUSB_LOWER_LESCAN_INTERVAL) {
+		hdev->le_scan_interval = 0x0190;
+		hdev->le_scan_window = 0x000a;
+	}
+
 	if (id->driver_info & BTUSB_SWAVE) {
 		set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
 		set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
-- 
2.31.1

From 7311eeeecd80d3cb7bae088a83e53807895f4e71 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= <verdre@v0yd.nl>
Date: Wed, 11 Nov 2020 12:31:26 +0100
Subject: [PATCH] mwifiex: Small cleanup for handling virtual interface type
 changes

Handle the obvious invalid virtual interface type changes with a general
check instead of looking at the individual change.

For type changes from P2P_CLIENT to P2P_GO and the other way round, this
changes the behavior slightly: We now still do nothing, but return
-EOPNOTSUPP instead of 0. Now that behavior was incorrect before and
still is, because type changes between these two types are actually
possible and supported, which we'll fix in a following commit.

Patchset: wifi
---
 .../net/wireless/marvell/mwifiex/cfg80211.c   | 39 +++++++------------
 1 file changed, 14 insertions(+), 25 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index 650191db25cb..5badf7fef37e 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -1145,6 +1145,20 @@ mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 		return -EBUSY;
 	}
 
+	if (type == NL80211_IFTYPE_UNSPECIFIED) {
+		mwifiex_dbg(priv->adapter, INFO,
+			    "%s: no new type specified, keeping old type %d\n",
+			    dev->name, curr_iftype);
+		return 0;
+	}
+
+	if (curr_iftype == type) {
+		mwifiex_dbg(priv->adapter, INFO,
+			    "%s: interface already is of type %d\n",
+			    dev->name, curr_iftype);
+		return 0;
+	}
+
 	switch (curr_iftype) {
 	case NL80211_IFTYPE_ADHOC:
 		switch (type) {
@@ -1164,12 +1178,6 @@ mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 		case NL80211_IFTYPE_AP:
 			return mwifiex_change_vif_to_ap(dev, curr_iftype, type,
 							params);
-		case NL80211_IFTYPE_UNSPECIFIED:
-			mwifiex_dbg(priv->adapter, INFO,
-				    "%s: kept type as IBSS\n", dev->name);
-			/* fall through */
-		case NL80211_IFTYPE_ADHOC:	/* This shouldn't happen */
-			return 0;
 		default:
 			mwifiex_dbg(priv->adapter, ERROR,
 				    "%s: changing to %d not supported\n",
@@ -1195,12 +1203,6 @@ mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 		case NL80211_IFTYPE_AP:
 			return mwifiex_change_vif_to_ap(dev, curr_iftype, type,
 							params);
-		case NL80211_IFTYPE_UNSPECIFIED:
-			mwifiex_dbg(priv->adapter, INFO,
-				    "%s: kept type as STA\n", dev->name);
-			/* fall through */
-		case NL80211_IFTYPE_STATION:	/* This shouldn't happen */
-			return 0;
 		default:
 			mwifiex_dbg(priv->adapter, ERROR,
 				    "%s: changing to %d not supported\n",
@@ -1218,12 +1220,6 @@ mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 		case NL80211_IFTYPE_P2P_GO:
 			return mwifiex_change_vif_to_p2p(dev, curr_iftype,
 							 type, params);
-		case NL80211_IFTYPE_UNSPECIFIED:
-			mwifiex_dbg(priv->adapter, INFO,
-				    "%s: kept type as AP\n", dev->name);
-			/* fall through */
-		case NL80211_IFTYPE_AP:		/* This shouldn't happen */
-			return 0;
 		default:
 			mwifiex_dbg(priv->adapter, ERROR,
 				    "%s: changing to %d not supported\n",
@@ -1258,13 +1254,6 @@ mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 				return -EFAULT;
 			return mwifiex_change_vif_to_ap(dev, curr_iftype, type,
 							params);
-		case NL80211_IFTYPE_UNSPECIFIED:
-			mwifiex_dbg(priv->adapter, INFO,
-				    "%s: kept type as P2P\n", dev->name);
-			/* fall through */
-		case NL80211_IFTYPE_P2P_CLIENT:
-		case NL80211_IFTYPE_P2P_GO:
-			return 0;
 		default:
 			mwifiex_dbg(priv->adapter, ERROR,
 				    "%s: changing to %d not supported\n",
-- 
2.31.1

From 7165cc0cf0a28627a5cd3db631af9c9b69093b8d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= <verdre@v0yd.nl>
Date: Wed, 11 Nov 2020 12:44:39 +0100
Subject: [PATCH] mwifiex: Use function to check whether interface type change
 is allowed

Instead of bailing out in the function which is supposed to do the type
change, detect invalid changes beforehand using a generic function and
return an error if the change is not allowed.

Patchset: wifi
---
 .../net/wireless/marvell/mwifiex/cfg80211.c   | 139 ++++++++++++------
 1 file changed, 92 insertions(+), 47 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index 5badf7fef37e..e73334679992 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -943,6 +943,76 @@ mwifiex_init_new_priv_params(struct mwifiex_private *priv,
 	return 0;
 }
 
+static bool
+is_vif_type_change_allowed(struct mwifiex_adapter *adapter,
+			   enum nl80211_iftype old_iftype,
+			   enum nl80211_iftype new_iftype)
+{
+	switch (old_iftype) {
+	case NL80211_IFTYPE_ADHOC:
+		switch (new_iftype) {
+		case NL80211_IFTYPE_STATION:
+			return true;
+		case NL80211_IFTYPE_P2P_CLIENT:
+		case NL80211_IFTYPE_P2P_GO:
+			return adapter->curr_iface_comb.p2p_intf !=
+			       adapter->iface_limit.p2p_intf;
+		case NL80211_IFTYPE_AP:
+			return adapter->curr_iface_comb.uap_intf !=
+			       adapter->iface_limit.uap_intf;
+		default:
+			return false;
+		}
+
+	case NL80211_IFTYPE_STATION:
+		switch (new_iftype) {
+		case NL80211_IFTYPE_ADHOC:
+			return true;
+		case NL80211_IFTYPE_P2P_CLIENT:
+		case NL80211_IFTYPE_P2P_GO:
+			return adapter->curr_iface_comb.p2p_intf !=
+			       adapter->iface_limit.p2p_intf;
+		case NL80211_IFTYPE_AP:
+			return adapter->curr_iface_comb.uap_intf !=
+			       adapter->iface_limit.uap_intf;
+		default:
+			return false;
+		}
+
+	case NL80211_IFTYPE_AP:
+		switch (new_iftype) {
+		case NL80211_IFTYPE_ADHOC:
+		case NL80211_IFTYPE_STATION:
+			return adapter->curr_iface_comb.sta_intf !=
+			       adapter->iface_limit.sta_intf;
+		case NL80211_IFTYPE_P2P_CLIENT:
+		case NL80211_IFTYPE_P2P_GO:
+			return adapter->curr_iface_comb.p2p_intf !=
+			       adapter->iface_limit.p2p_intf;
+		default:
+			return false;
+		}
+
+	case NL80211_IFTYPE_P2P_CLIENT:
+	case NL80211_IFTYPE_P2P_GO:
+		switch (new_iftype) {
+		case NL80211_IFTYPE_ADHOC:
+		case NL80211_IFTYPE_STATION:
+			return true;
+		case NL80211_IFTYPE_AP:
+			return adapter->curr_iface_comb.uap_intf !=
+			       adapter->iface_limit.uap_intf;
+		default:
+			return false;
+		}
+
+	default:
+		break;
+	}
+
+	return false;
+}
+
 static int
 mwifiex_change_vif_to_p2p(struct net_device *dev,
 			  enum nl80211_iftype curr_iftype,
@@ -959,13 +1029,6 @@ mwifiex_change_vif_to_p2p(struct net_device *dev,
 
 	adapter = priv->adapter;
 
-	if (adapter->curr_iface_comb.p2p_intf ==
-	    adapter->iface_limit.p2p_intf) {
-		mwifiex_dbg(adapter, ERROR,
-			    "cannot create multiple P2P ifaces\n");
-		return -1;
-	}
-
 	mwifiex_dbg(adapter, INFO,
 		    "%s: changing role to p2p\n", dev->name);
 
@@ -1031,15 +1094,6 @@ mwifiex_change_vif_to_sta_adhoc(struct net_device *dev,
 
 	adapter = priv->adapter;
 
-	if ((curr_iftype != NL80211_IFTYPE_P2P_CLIENT &&
-	     curr_iftype != NL80211_IFTYPE_P2P_GO) &&
-	    (adapter->curr_iface_comb.sta_intf ==
-	     adapter->iface_limit.sta_intf)) {
-		mwifiex_dbg(adapter, ERROR,
-			    "cannot create multiple station/adhoc ifaces\n");
-		return -1;
-	}
-
 	if (type == NL80211_IFTYPE_STATION)
 		mwifiex_dbg(adapter, INFO,
 			    "%s: changing role to station\n", dev->name);
@@ -1090,13 +1144,6 @@ mwifiex_change_vif_to_ap(struct net_device *dev,
 
 	adapter = priv->adapter;
 
-	if (adapter->curr_iface_comb.uap_intf ==
-	    adapter->iface_limit.uap_intf) {
-		mwifiex_dbg(adapter, ERROR,
-			    "cannot create multiple AP ifaces\n");
-		return -1;
-	}
-
 	mwifiex_dbg(adapter, INFO,
 		    "%s: changing role to AP\n", dev->name);
 
@@ -1159,6 +1206,13 @@ mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 		return 0;
 	}
 
+	if (!is_vif_type_change_allowed(priv->adapter, curr_iftype, type)) {
+		mwifiex_dbg(priv->adapter, ERROR,
+			    "%s: change from type %d to %d is not allowed\n",
+			    dev->name, curr_iftype, type);
+		return -EOPNOTSUPP;
+	}
+
 	switch (curr_iftype) {
 	case NL80211_IFTYPE_ADHOC:
 		switch (type) {
@@ -1179,12 +1233,9 @@ mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 			return mwifiex_change_vif_to_ap(dev, curr_iftype, type,
 							params);
 		default:
-			mwifiex_dbg(priv->adapter, ERROR,
-				    "%s: changing to %d not supported\n",
-				    dev->name, type);
-			return -EOPNOTSUPP;
+			goto errnotsupp;
 		}
-		break;
+
 	case NL80211_IFTYPE_STATION:
 		switch (type) {
 		case NL80211_IFTYPE_ADHOC:
@@ -1204,12 +1255,9 @@ mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 			return mwifiex_change_vif_to_ap(dev, curr_iftype, type,
 							params);
 		default:
-			mwifiex_dbg(priv->adapter, ERROR,
-				    "%s: changing to %d not supported\n",
-				    dev->name, type);
-			return -EOPNOTSUPP;
+			goto errnotsupp;
 		}
-		break;
+
 	case NL80211_IFTYPE_AP:
 		switch (type) {
 		case NL80211_IFTYPE_ADHOC:
@@ -1221,12 +1269,9 @@ mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 			return mwifiex_change_vif_to_p2p(dev, curr_iftype,
 							 type, params);
 		default:
-			mwifiex_dbg(priv->adapter, ERROR,
-				    "%s: changing to %d not supported\n",
-				    dev->name, type);
-			return -EOPNOTSUPP;
+			goto errnotsupp;
 		}
-		break;
+
 	case NL80211_IFTYPE_P2P_CLIENT:
 	case NL80211_IFTYPE_P2P_GO:
 		switch (type) {
@@ -1255,21 +1300,21 @@ mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 			return mwifiex_change_vif_to_ap(dev, curr_iftype, type,
 							params);
 		default:
-			mwifiex_dbg(priv->adapter, ERROR,
-				    "%s: changing to %d not supported\n",
-				    dev->name, type);
-			return -EOPNOTSUPP;
+			goto errnotsupp;
 		}
-		break;
+
 	default:
-		mwifiex_dbg(priv->adapter, ERROR,
-			    "%s: unknown iftype: %d\n",
-			    dev->name, dev->ieee80211_ptr->iftype);
-		return -EOPNOTSUPP;
+		goto errnotsupp;
 	}
 
 
 	return 0;
+
+errnotsupp:
+	mwifiex_dbg(priv->adapter, ERROR,
+		    "unsupported interface type transition: %d to %d\n",
+		    curr_iftype, type);
+	return -EOPNOTSUPP;
 }
 
 static void
-- 
2.31.1

From 2904d85c0deee3362a69856847c3976fffa5117e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= <verdre@v0yd.nl>
Date: Wed, 11 Nov 2020 13:33:04 +0100
Subject: [PATCH] mwifiex: Run SET_BSS_MODE when changing from P2P to STATION
 vif-type

We currently handle changing from the P2P to the STATION virtual
interface type slightly different than changing from P2P to ADHOC: When
changing to STATION, we don't send the SET_BSS_MODE command. We do send
that command on all other type-changes though, and it probably makes
sense to send the command since after all we just changed our BSS_MODE.
Looking at prior changes to this part of the code, it seems that this is
simply a leftover from old refactorings.

Since sending the SET_BSS_MODE command is the only difference between
mwifiex_change_vif_to_sta_adhoc() and the current code, we can now use
mwifiex_change_vif_to_sta_adhoc() for both switching to ADHOC and
STATION interface type.

This does not fix any particular bug and just "looked right", so there's
a small chance it might be a regression.

Patchset: wifi
---
 .../net/wireless/marvell/mwifiex/cfg80211.c   | 22 ++++---------------
 1 file changed, 4 insertions(+), 18 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index e73334679992..99da637692cc 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -1274,29 +1274,15 @@ mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 
 	case NL80211_IFTYPE_P2P_CLIENT:
 	case NL80211_IFTYPE_P2P_GO:
+		if (mwifiex_cfg80211_deinit_p2p(priv))
+			return -EFAULT;
+
 		switch (type) {
-		case NL80211_IFTYPE_STATION:
-			if (mwifiex_cfg80211_deinit_p2p(priv))
-				return -EFAULT;
-			priv->adapter->curr_iface_comb.p2p_intf--;
-			priv->adapter->curr_iface_comb.sta_intf++;
-			dev->ieee80211_ptr->iftype = type;
-			if (mwifiex_deinit_priv_params(priv))
-				return -1;
-			if (mwifiex_init_new_priv_params(priv, dev, type))
-				return -1;
-			if (mwifiex_sta_init_cmd(priv, false, false))
-				return -1;
-			break;
 		case NL80211_IFTYPE_ADHOC:
-			if (mwifiex_cfg80211_deinit_p2p(priv))
-				return -EFAULT;
+		case NL80211_IFTYPE_STATION:
 			return mwifiex_change_vif_to_sta_adhoc(dev, curr_iftype,
 							       type, params);
-			break;
 		case NL80211_IFTYPE_AP:
-			if (mwifiex_cfg80211_deinit_p2p(priv))
-				return -EFAULT;
 			return mwifiex_change_vif_to_ap(dev, curr_iftype, type,
 							params);
 		default:
-- 
2.31.1

From 5cb6a0dd8de3ce090db62521a67f3df1f75835d3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= <verdre@v0yd.nl>
Date: Wed, 11 Nov 2020 14:42:54 +0100
Subject: [PATCH] mwifiex: Use helper function for counting interface types

Use a small helper function to increment and decrement the counter of
the interface types we currently manage. This makes the code that
actually changes and sets up the interface type a bit less messy and
also helps avoiding mistakes in case someone increments/decrements a
counter wrongly.

Patchset: wifi
---
 .../net/wireless/marvell/mwifiex/cfg80211.c   | 110 ++++++------------
 1 file changed, 35 insertions(+), 75 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index 99da637692cc..feb3a858d8c1 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -1013,6 +1013,32 @@ is_vif_type_change_allowed(struct mwifiex_adapter *adapter,
 	return false;
 }
 
+static void
+update_vif_type_counter(struct mwifiex_adapter *adapter,
+			enum nl80211_iftype iftype,
+			int change)
+{
+	switch (iftype) {
+	case NL80211_IFTYPE_UNSPECIFIED:
+	case NL80211_IFTYPE_ADHOC:
+	case NL80211_IFTYPE_STATION:
+		adapter->curr_iface_comb.sta_intf += change;
+		break;
+	case NL80211_IFTYPE_AP:
+		adapter->curr_iface_comb.uap_intf += change;
+		break;
+	case NL80211_IFTYPE_P2P_CLIENT:
+	case NL80211_IFTYPE_P2P_GO:
+		adapter->curr_iface_comb.p2p_intf += change;
+		break;
+	default:
+		mwifiex_dbg(adapter, ERROR,
+			    "%s: Unsupported iftype passed: %d\n",
+			    __func__, iftype);
+		break;
+	}
+}
+
 static int
 mwifiex_change_vif_to_p2p(struct net_device *dev,
 			  enum nl80211_iftype curr_iftype,
@@ -1060,19 +1086,8 @@ mwifiex_change_vif_to_p2p(struct net_device *dev,
 	if (mwifiex_sta_init_cmd(priv, false, false))
 		return -1;
 
-	switch (curr_iftype) {
-	case NL80211_IFTYPE_STATION:
-	case NL80211_IFTYPE_ADHOC:
-		adapter->curr_iface_comb.sta_intf--;
-		break;
-	case NL80211_IFTYPE_AP:
-		adapter->curr_iface_comb.uap_intf--;
-		break;
-	default:
-		break;
-	}
-
-	adapter->curr_iface_comb.p2p_intf++;
+	update_vif_type_counter(adapter, curr_iftype, -1);
+	update_vif_type_counter(adapter, type, +1);
 	dev->ieee80211_ptr->iftype = type;
 
 	return 0;
@@ -1111,20 +1126,10 @@ mwifiex_change_vif_to_sta_adhoc(struct net_device *dev,
 	if (mwifiex_sta_init_cmd(priv, false, false))
 		return -1;
 
-	switch (curr_iftype) {
-	case NL80211_IFTYPE_P2P_CLIENT:
-	case NL80211_IFTYPE_P2P_GO:
-		adapter->curr_iface_comb.p2p_intf--;
-		break;
-	case NL80211_IFTYPE_AP:
-		adapter->curr_iface_comb.uap_intf--;
-		break;
-	default:
-		break;
-	}
-
-	adapter->curr_iface_comb.sta_intf++;
+	update_vif_type_counter(adapter, curr_iftype, -1);
+	update_vif_type_counter(adapter, type, +1);
 	dev->ieee80211_ptr->iftype = type;
+
 	return 0;
 }
 
@@ -1157,20 +1162,8 @@ mwifiex_change_vif_to_ap(struct net_device *dev,
 	if (mwifiex_sta_init_cmd(priv, false, false))
 		return -1;
 
-	switch (curr_iftype) {
-	case NL80211_IFTYPE_P2P_CLIENT:
-	case NL80211_IFTYPE_P2P_GO:
-		adapter->curr_iface_comb.p2p_intf--;
-		break;
-	case NL80211_IFTYPE_STATION:
-	case NL80211_IFTYPE_ADHOC:
-		adapter->curr_iface_comb.sta_intf--;
-		break;
-	default:
-		break;
-	}
-
-	adapter->curr_iface_comb.uap_intf++;
+	update_vif_type_counter(adapter, curr_iftype, -1);
+	update_vif_type_counter(adapter, type, +1);
 	dev->ieee80211_ptr->iftype = type;
 	return 0;
 }
@@ -3091,23 +3084,7 @@ struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy,
 	mwifiex_dev_debugfs_init(priv);
 #endif
 
-	switch (type) {
-	case NL80211_IFTYPE_UNSPECIFIED:
-	case NL80211_IFTYPE_STATION:
-	case NL80211_IFTYPE_ADHOC:
-		adapter->curr_iface_comb.sta_intf++;
-		break;
-	case NL80211_IFTYPE_AP:
-		adapter->curr_iface_comb.uap_intf++;
-		break;
-	case NL80211_IFTYPE_P2P_CLIENT:
-		adapter->curr_iface_comb.p2p_intf++;
-		break;
-	default:
-		/* This should be dead code; checked above */
-		mwifiex_dbg(adapter, ERROR, "type not supported\n");
-		return ERR_PTR(-EINVAL);
-	}
+	update_vif_type_counter(adapter, type, +1);
 
 	return &priv->wdev;
 
@@ -3173,24 +3150,7 @@ int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev)
 	/* Clear the priv in adapter */
 	priv->netdev = NULL;
 
-	switch (priv->bss_mode) {
-	case NL80211_IFTYPE_UNSPECIFIED:
-	case NL80211_IFTYPE_STATION:
-	case NL80211_IFTYPE_ADHOC:
-		adapter->curr_iface_comb.sta_intf--;
-		break;
-	case NL80211_IFTYPE_AP:
-		adapter->curr_iface_comb.uap_intf--;
-		break;
-	case NL80211_IFTYPE_P2P_CLIENT:
-	case NL80211_IFTYPE_P2P_GO:
-		adapter->curr_iface_comb.p2p_intf--;
-		break;
-	default:
-		mwifiex_dbg(adapter, ERROR,
-			    "del_virtual_intf: type not supported\n");
-		break;
-	}
+	update_vif_type_counter(adapter, priv->bss_mode, -1);
 
 	priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
 
-- 
2.31.1

From 70ef3297dc65f00ad9315ed7c2896cb0f7ee9cb5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= <verdre@v0yd.nl>
Date: Fri, 26 Mar 2021 15:56:58 +0100
Subject: [PATCH] mwifiex: Update virtual interface counters right after
 setting bss_type

In mwifiex_init_new_priv_params() we update our private driver state to
reflect the currently selected virtual interface type. Most notably we
set the bss_mode to the mode we're going to put the firmware in.

Now after we updated the driver state we actually start talking to the
firmware and instruct it to set up the new mode. Those commands can and
will sometimes fail, in which case we return with an error from
mwifiex_change_vif_to_*. We currently update our virtual interface type
counters after this return, which means the code is never reached when a
firmware error happens and we never update the counters. Since we have
updated our bss_mode earlier though, the counters now no longer reflect
the actual state of the driver.

This will break things on the next virtual interface change, because the
virtual interface type we're switching away from didn't get its counter
incremented, and we end up decrementing a 0-counter.

To fix this, simply update the virtual interface type counters right
after updating our driver structures, so that they are always in sync.

Patchset: wifi
---
 .../net/wireless/marvell/mwifiex/cfg80211.c   | 25 +++++++++++--------
 1 file changed, 14 insertions(+), 11 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index feb3a858d8c1..54d9e789aa14 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -1063,6 +1063,10 @@ mwifiex_change_vif_to_p2p(struct net_device *dev,
 	if (mwifiex_init_new_priv_params(priv, dev, type))
 		return -1;
 
+	update_vif_type_counter(adapter, curr_iftype, -1);
+	update_vif_type_counter(adapter, type, +1);
+	dev->ieee80211_ptr->iftype = type;
+
 	switch (type) {
 	case NL80211_IFTYPE_P2P_CLIENT:
 		if (mwifiex_cfg80211_init_p2p_client(priv))
@@ -1086,10 +1090,6 @@ mwifiex_change_vif_to_p2p(struct net_device *dev,
 	if (mwifiex_sta_init_cmd(priv, false, false))
 		return -1;
 
-	update_vif_type_counter(adapter, curr_iftype, -1);
-	update_vif_type_counter(adapter, type, +1);
-	dev->ieee80211_ptr->iftype = type;
-
 	return 0;
 }
 
@@ -1120,16 +1120,17 @@ mwifiex_change_vif_to_sta_adhoc(struct net_device *dev,
 		return -1;
 	if (mwifiex_init_new_priv_params(priv, dev, type))
 		return -1;
+
+	update_vif_type_counter(adapter, curr_iftype, -1);
+	update_vif_type_counter(adapter, type, +1);
+	dev->ieee80211_ptr->iftype = type;
+
 	if (mwifiex_send_cmd(priv, HostCmd_CMD_SET_BSS_MODE,
 			     HostCmd_ACT_GEN_SET, 0, NULL, true))
 		return -1;
 	if (mwifiex_sta_init_cmd(priv, false, false))
 		return -1;
 
-	update_vif_type_counter(adapter, curr_iftype, -1);
-	update_vif_type_counter(adapter, type, +1);
-	dev->ieee80211_ptr->iftype = type;
-
 	return 0;
 }
 
@@ -1156,15 +1157,17 @@ mwifiex_change_vif_to_ap(struct net_device *dev,
 		return -1;
 	if (mwifiex_init_new_priv_params(priv, dev, type))
 		return -1;
+
+	update_vif_type_counter(adapter, curr_iftype, -1);
+	update_vif_type_counter(adapter, type, +1);
+	dev->ieee80211_ptr->iftype = type;
+
 	if (mwifiex_send_cmd(priv, HostCmd_CMD_SET_BSS_MODE,
 			     HostCmd_ACT_GEN_SET, 0, NULL, true))
 		return -1;
 	if (mwifiex_sta_init_cmd(priv, false, false))
 		return -1;
 
-	update_vif_type_counter(adapter, curr_iftype, -1);
-	update_vif_type_counter(adapter, type, +1);
-	dev->ieee80211_ptr->iftype = type;
 	return 0;
 }
 /*
-- 
2.31.1

From 0d2adbf9a64919cb5d0d23878e2ab904ba62d8ad Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= <verdre@v0yd.nl>
Date: Wed, 11 Nov 2020 13:42:40 +0100
Subject: [PATCH] mwifiex: Allow switching interface type from P2P_CLIENT to
 P2P_GO

It's possible to change virtual interface type between P2P_CLIENT and
P2P_GO, the card supports that just fine, and it happens for example
when using miracast with the miraclecast software.

So allow type changes between P2P_CLIENT and P2P_GO and simply call into
mwifiex_change_vif_to_p2p(), which handles this just fine. We have to
call mwifiex_cfg80211_deinit_p2p() before though to make sure the old
p2p mode is properly uninitialized.

Patchset: wifi
---
 .../net/wireless/marvell/mwifiex/cfg80211.c   | 36 +++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index 54d9e789aa14..ec5ed00b4b89 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -994,11 +994,26 @@ is_vif_type_change_allowed(struct mwifiex_adapter *adapter,
 		}
 
 	case NL80211_IFTYPE_P2P_CLIENT:
+		switch (new_iftype) {
+		case NL80211_IFTYPE_ADHOC:
+		case NL80211_IFTYPE_STATION:
+			return true;
+		case NL80211_IFTYPE_P2P_GO:
+			return true;
+		case NL80211_IFTYPE_AP:
+			return adapter->curr_iface_comb.uap_intf !=
+			       adapter->iface_limit.uap_intf;
+		default:
+			return false;
+		}
+
 	case NL80211_IFTYPE_P2P_GO:
 		switch (new_iftype) {
 		case NL80211_IFTYPE_ADHOC:
 		case NL80211_IFTYPE_STATION:
 			return true;
+		case NL80211_IFTYPE_P2P_CLIENT:
+			return true;
 		case NL80211_IFTYPE_AP:
 			return adapter->curr_iface_comb.uap_intf !=
 			       adapter->iface_limit.uap_intf;
@@ -1269,6 +1284,24 @@ mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 		}
 
 	case NL80211_IFTYPE_P2P_CLIENT:
+		if (mwifiex_cfg80211_deinit_p2p(priv))
+			return -EFAULT;
+
+		switch (type) {
+		case NL80211_IFTYPE_ADHOC:
+		case NL80211_IFTYPE_STATION:
+			return mwifiex_change_vif_to_sta_adhoc(dev, curr_iftype,
+							       type, params);
+		case NL80211_IFTYPE_P2P_GO:
+			return mwifiex_change_vif_to_p2p(dev, curr_iftype,
+							 type, params);
+		case NL80211_IFTYPE_AP:
+			return mwifiex_change_vif_to_ap(dev, curr_iftype, type,
+							params);
+		default:
+			goto errnotsupp;
+		}
+
 	case NL80211_IFTYPE_P2P_GO:
 		if (mwifiex_cfg80211_deinit_p2p(priv))
 			return -EFAULT;
@@ -1278,6 +1311,9 @@ mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 		case NL80211_IFTYPE_STATION:
 			return mwifiex_change_vif_to_sta_adhoc(dev, curr_iftype,
 							       type, params);
+		case NL80211_IFTYPE_P2P_CLIENT:
+			return mwifiex_change_vif_to_p2p(dev, curr_iftype,
+							 type, params);
 		case NL80211_IFTYPE_AP:
 			return mwifiex_change_vif_to_ap(dev, curr_iftype, type,
 							params);
-- 
2.31.1

From ab87318470957c4883f0558866d455ec892e3a8c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= <verdre@v0yd.nl>
Date: Fri, 26 Mar 2021 15:31:08 +0100
Subject: [PATCH] mwifiex: Handle interface type changes from AP to STATION

Looks like this case was simply overseen, so handle it, too.

Patchset: wifi
---
 drivers/net/wireless/marvell/mwifiex/cfg80211.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index ec5ed00b4b89..0fc554abfea3 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -1272,6 +1272,7 @@ mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
 	case NL80211_IFTYPE_AP:
 		switch (type) {
 		case NL80211_IFTYPE_ADHOC:
+		case NL80211_IFTYPE_STATION:
 			return mwifiex_change_vif_to_sta_adhoc(dev, curr_iftype,
 							       type, params);
 			break;
-- 
2.31.1

From 43ae7dbec10ec94c1643bce67310511a618c870b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= <verdre@v0yd.nl>
Date: Fri, 26 Mar 2021 15:32:16 +0100
Subject: [PATCH] mwifiex: Properly initialize private structure on interface
 type changes

When creating a new virtual interface in mwifiex_add_virtual_intf(), we
update our internal driver states like bss_type, bss_priority, bss_role
and bss_mode to reflect the mode the firmware will be set to.

When switching virtual interface mode using
mwifiex_init_new_priv_params() though, we currently only update bss_mode
and bss_role. In order for the interface mode switch to actually work,
we also need to update bss_type to its proper value, so do that.

This fixes a crash of the firmware (because the driver tries to execute
commands that are invalid in AP mode) when switching from station mode
to AP mode.

Patchset: wifi
---
 drivers/net/wireless/marvell/mwifiex/cfg80211.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index 0fc554abfea3..7c6d31eb058c 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -912,16 +912,20 @@ mwifiex_init_new_priv_params(struct mwifiex_private *priv,
 	switch (type) {
 	case NL80211_IFTYPE_STATION:
 	case NL80211_IFTYPE_ADHOC:
-		priv->bss_role =  MWIFIEX_BSS_ROLE_STA;
+		priv->bss_role = MWIFIEX_BSS_ROLE_STA;
+		priv->bss_type = MWIFIEX_BSS_TYPE_STA;
 		break;
 	case NL80211_IFTYPE_P2P_CLIENT:
-		priv->bss_role =  MWIFIEX_BSS_ROLE_STA;
+		priv->bss_role = MWIFIEX_BSS_ROLE_STA;
+		priv->bss_type = MWIFIEX_BSS_TYPE_P2P;
 		break;
 	case NL80211_IFTYPE_P2P_GO:
-		priv->bss_role =  MWIFIEX_BSS_ROLE_UAP;
+		priv->bss_role = MWIFIEX_BSS_ROLE_UAP;
+		priv->bss_type = MWIFIEX_BSS_TYPE_P2P;
 		break;
 	case NL80211_IFTYPE_AP:
 		priv->bss_role = MWIFIEX_BSS_ROLE_UAP;
+		priv->bss_type = MWIFIEX_BSS_TYPE_UAP;
 		break;
 	default:
 		mwifiex_dbg(adapter, ERROR,
-- 
2.31.1

From d0a26bd105768e953d343b6ee50cca59f4062962 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= <verdre@v0yd.nl>
Date: Sat, 27 Mar 2021 12:19:14 +0100
Subject: [PATCH] mwifiex: Fix copy-paste mistake when creating virtual
 interface

The BSS priority here for a new P2P_CLIENT device was accidentally set
to an enum that's certainly not meant for this. Since
MWIFIEX_BSS_ROLE_STA is 0 anyway, we can just set the bss_priority to 0
instead here.

Patchset: wifi
---
 drivers/net/wireless/marvell/mwifiex/cfg80211.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index 7c6d31eb058c..16a94f06a518 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -3017,7 +3017,7 @@ struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy,
 		priv->bss_type = MWIFIEX_BSS_TYPE_P2P;
 
 		priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
-		priv->bss_priority = MWIFIEX_BSS_ROLE_STA;
+		priv->bss_priority = 0;
 		priv->bss_role = MWIFIEX_BSS_ROLE_STA;
 		priv->bss_started = 0;
 
-- 
2.31.1