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Kernel/PCI: Verify Access is not initialized before initializing it

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There's no valid case where we should try to initialize the Access
singleton multiple times, therefore just assert if it ever happens.
This commit is contained in:
Liav A 2022-01-21 18:13:34 +02:00 committed by Idan Horowitz
parent 78d1093dab
commit cecfd42916
Notes: sideshowbarker 2024-07-17 20:31:18 +09:00 
Author: https://github.com/supercomputer7
Commit: https://github.com/SerenityOS/serenity/commit/cecfd42916d
Pull-request: https://github.com/SerenityOS/serenity/pull/12048
1 changed files with 2 additions and 6 deletions
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8
Kernel/Bus/PCI/Access.cpp
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@ -88,9 +88,7 @@ UNMAP_AFTER_INIT bool Access::find_and_register_pci_host_bridges_from_acpi_mcfg_
UNMAP_AFTER_INIT bool Access::initialize_for_multiple_pci_domains(PhysicalAddress mcfg_table)
{
if (Access::is_initialized())
return false;
VERIFY(!Access::is_initialized());
auto* access = new Access();
if (!access->find_and_register_pci_host_bridges_from_acpi_mcfg_table(mcfg_table))
return false;
@ -101,9 +99,7 @@ UNMAP_AFTER_INIT bool Access::initialize_for_multiple_pci_domains(PhysicalAddres
UNMAP_AFTER_INIT bool Access::initialize_for_one_pci_domain()
{
if (Access::is_initialized()) {
return false;
}
VERIFY(!Access::is_initialized());
auto* access = new Access();
auto host_bridge = HostBridge::must_create_with_io_access();
access->add_host_controller(move(host_bridge));