Kernel/NVMe: Fix calculation of "Maximum Queue Entries Supported" field

The value of this field is incremented by one, as a value of 0 for this field means 1 entry supported. A value of 0xffff for CAP.MQES would incorrectly by truncated to 0x0000, if we don't increase the bit width of the return type.
Author: https://github.com/spholz Commit: https://github.com/SerenityOS/serenity/commit/6daa0da3c6 Pull-request: https://github.com/SerenityOS/serenity/pull/23456
2024-03-03 22:07:38 +01:00 · 2024-03-03 22:07:38 +01:00 · 6daa0da3c6 · 2024-07-17 02:57:43 +09:00
commit 6daa0da3c6
parent 760b9186a5
1 changed files with 1 additions and 1 deletions
--- a/Kernel/Devices/Storage/NVMe/NVMeDefinitions.h
+++ b/Kernel/Devices/Storage/NVMe/NVMeDefinitions.h
@ -54,7 +54,7 @@ static constexpr u8 CAP_DBL_SHIFT = 32;
 static constexpr u8 CAP_DBL_MASK = 0xf;
 static constexpr u8 CAP_TO_SHIFT = 24;
 static constexpr u64 CAP_TO_MASK = 0xff << CAP_TO_SHIFT;
-static constexpr u16 MQES(u64 cap)
+static constexpr u32 MQES(u64 cap)
 {
    return (cap & 0xffff) + 1;
 }