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Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>

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We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace!
This was a slightly tedious refactoring that took a long time, so it's
not unlikely that some bugs crept in.

Nevertheless, it does pass basic functionality testing, and it's just
real nice to finally see the same pattern in all contexts. :^)
This commit is contained in:
Andreas Kling 2021-11-08 00:51:39 +01:00
parent 7ee10c6926
commit 79fa9765ca
262 changed files with 2415 additions and 2600 deletions
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20
Kernel/Bus/USB/UHCI/UHCIController.h
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@ -33,24 +33,24 @@ class UHCIController final
public:
static constexpr u8 NUMBER_OF_ROOT_PORTS = 2;
static KResultOr<NonnullRefPtr<UHCIController>> try_to_initialize(PCI::DeviceIdentifier const& pci_device_identifier);
static ErrorOr<NonnullRefPtr<UHCIController>> try_to_initialize(PCI::DeviceIdentifier const& pci_device_identifier);
virtual ~UHCIController() override;
virtual StringView purpose() const override { return "UHCI"sv; }
virtual KResult initialize() override;
virtual KResult reset() override;
virtual KResult stop() override;
virtual KResult start() override;
virtual ErrorOr<void> initialize() override;
virtual ErrorOr<void> reset() override;
virtual ErrorOr<void> stop() override;
virtual ErrorOr<void> start() override;
void spawn_port_proc();
void do_debug_transfer();
virtual KResultOr<size_t> submit_control_transfer(Transfer& transfer) override;
virtual ErrorOr<size_t> submit_control_transfer(Transfer& transfer) override;
void get_port_status(Badge<UHCIRootHub>, u8, HubStatus&);
KResult set_port_feature(Badge<UHCIRootHub>, u8, HubFeatureSelector);
KResult clear_port_feature(Badge<UHCIRootHub>, u8, HubFeatureSelector);
ErrorOr<void> set_port_feature(Badge<UHCIRootHub>, u8, HubFeatureSelector);
ErrorOr<void> clear_port_feature(Badge<UHCIRootHub>, u8, HubFeatureSelector);
private:
explicit UHCIController(PCI::DeviceIdentifier const& pci_device_identifier);
@ -75,12 +75,12 @@ private:
virtual bool handle_irq(const RegisterState&) override;
KResult create_structures();
ErrorOr<void> create_structures();
void setup_schedule();
size_t poll_transfer_queue(QueueHead& transfer_queue);
TransferDescriptor* create_transfer_descriptor(Pipe& pipe, PacketID direction, size_t data_len);
KResult create_chain(Pipe& pipe, PacketID direction, Ptr32<u8>& buffer_address, size_t max_size, size_t transfer_size, TransferDescriptor** td_chain, TransferDescriptor** last_td);
ErrorOr<void> create_chain(Pipe& pipe, PacketID direction, Ptr32<u8>& buffer_address, size_t max_size, size_t transfer_size, TransferDescriptor** td_chain, TransferDescriptor** last_td);
void free_descriptor_chain(TransferDescriptor* first_descriptor);
QueueHead* allocate_queue_head();