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Kernel/Storage: Use NonnullRefPtr for storage controllers

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Storage controllers are initialized during init and are never modified.
NonnullRefPtr can be safely used instead of the NonnullLockRefPtr. This
also fixes one of the UB issue that was there when using an NVMe device
because of NonnullLockRefPtr.

We can add proper locking when we need to modify the storage controllers
after init.
This commit is contained in:
Pankaj Raghav 2023-03-14 09:44:21 +01:00 • committed by Andreas Kling
parent 0dbca4af06
commit b204da94b0
11 changed files with 16 additions and 16 deletions
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4
Kernel/Arch/x86_64/ISABus/IDEController.cpp
View file

@ -15,9 +15,9 @@
namespace Kernel {
UNMAP_AFTER_INIT ErrorOr<NonnullLockRefPtr<ISAIDEController>> ISAIDEController::initialize()
UNMAP_AFTER_INIT ErrorOr<NonnullRefPtr<ISAIDEController>> ISAIDEController::initialize()
{
auto controller = TRY(adopt_nonnull_lock_ref_or_enomem(new (nothrow) ISAIDEController()));
auto controller = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) ISAIDEController()));
TRY(controller->initialize_channels());
return controller;
}

2
Kernel/Arch/x86_64/ISABus/IDEController.h
View file

@ -18,7 +18,7 @@ class AsyncBlockDeviceRequest;
class ISAIDEController final : public IDEController {
public:
static ErrorOr<NonnullLockRefPtr<ISAIDEController>> initialize();
static ErrorOr<NonnullRefPtr<ISAIDEController>> initialize();
private:
ISAIDEController();

4
Kernel/Arch/x86_64/PCI/IDELegacyModeController.cpp
View file

@ -15,9 +15,9 @@
namespace Kernel {
UNMAP_AFTER_INIT ErrorOr<NonnullLockRefPtr<PCIIDELegacyModeController>> PCIIDELegacyModeController::initialize(PCI::DeviceIdentifier const& device_identifier, bool force_pio)
UNMAP_AFTER_INIT ErrorOr<NonnullRefPtr<PCIIDELegacyModeController>> PCIIDELegacyModeController::initialize(PCI::DeviceIdentifier const& device_identifier, bool force_pio)
{
auto controller = TRY(adopt_nonnull_lock_ref_or_enomem(new (nothrow) PCIIDELegacyModeController(device_identifier)));
auto controller = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) PCIIDELegacyModeController(device_identifier)));
PCI::enable_io_space(device_identifier);
PCI::enable_memory_space(device_identifier);
PCI::enable_bus_mastering(device_identifier);

2
Kernel/Arch/x86_64/PCI/IDELegacyModeController.h
View file

@ -19,7 +19,7 @@ class AsyncBlockDeviceRequest;
class PCIIDELegacyModeController final : public IDEController
, public PCI::Device {
public:
static ErrorOr<NonnullLockRefPtr<PCIIDELegacyModeController>> initialize(PCI::DeviceIdentifier const&, bool force_pio);
static ErrorOr<NonnullRefPtr<PCIIDELegacyModeController>> initialize(PCI::DeviceIdentifier const&, bool force_pio);
virtual StringView device_name() const override { return "PCIIDELegacyModeController"sv; }