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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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34
Kernel/Bus/USB/UHCI/UHCIController.cpp
View file

@ -62,7 +62,7 @@ static constexpr u16 UCHI_PORTSC_NON_WRITE_CLEAR_BIT_MASK = 0x1FF5; // This is u
static constexpr u8 UHCI_NUMBER_OF_ISOCHRONOUS_TDS = 128;
static constexpr u16 UHCI_NUMBER_OF_FRAMES = 1024;
KResultOr<NonnullRefPtr<UHCIController>> UHCIController::try_to_initialize(PCI::DeviceIdentifier const& pci_device_identifier)
ErrorOr<NonnullRefPtr<UHCIController>> UHCIController::try_to_initialize(PCI::DeviceIdentifier const& pci_device_identifier)
{
// NOTE: This assumes that address is pointing to a valid UHCI controller.
auto controller = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) UHCIController(pci_device_identifier)));
@ -70,7 +70,7 @@ KResultOr<NonnullRefPtr<UHCIController>> UHCIController::try_to_initialize(PCI::
return controller;
}
KResult UHCIController::initialize()
ErrorOr<void> UHCIController::initialize()
{
dmesgln("UHCI: Controller found {} @ {}", PCI::get_hardware_id(pci_address()), pci_address());
dmesgln("UHCI: I/O base {}", m_io_base);
@ -93,7 +93,7 @@ UNMAP_AFTER_INIT UHCIController::~UHCIController()
{
}
KResult UHCIController::reset()
ErrorOr<void> UHCIController::reset()
{
TRY(stop());
@ -126,10 +126,10 @@ KResult UHCIController::reset()
write_usbintr(0);
dbgln("UHCI: Reset completed");
return KSuccess;
return {};
}
UNMAP_AFTER_INIT KResult UHCIController::create_structures()
UNMAP_AFTER_INIT ErrorOr<void> UHCIController::create_structures()
{
m_queue_head_pool = TRY(UHCIDescriptorPool<QueueHead>::try_create("Queue Head Pool"sv));
@ -173,7 +173,7 @@ UNMAP_AFTER_INIT KResult UHCIController::create_structures()
m_transfer_descriptor_pool->print_pool_information();
}
return KSuccess;
return {};
}
UNMAP_AFTER_INIT void UHCIController::setup_schedule()
@ -245,7 +245,7 @@ TransferDescriptor* UHCIController::allocate_transfer_descriptor()
return m_transfer_descriptor_pool->try_take_free_descriptor();
}
KResult UHCIController::stop()
ErrorOr<void> UHCIController::stop()
{
write_usbcmd(read_usbcmd() & ~UHCI_USBCMD_RUN);
// FIXME: Timeout
@ -253,10 +253,10 @@ KResult UHCIController::stop()
if (read_usbsts() & UHCI_USBSTS_HOST_CONTROLLER_HALTED)
break;
}
return KSuccess;
return {};
}
KResult UHCIController::start()
ErrorOr<void> UHCIController::start()
{
write_usbcmd(read_usbcmd() | UHCI_USBCMD_RUN);
// FIXME: Timeout
@ -268,7 +268,7 @@ KResult UHCIController::start()
m_root_hub = TRY(UHCIRootHub::try_create(*this));
TRY(m_root_hub->setup({}));
return KSuccess;
return {};
}
TransferDescriptor* UHCIController::create_transfer_descriptor(Pipe& pipe, PacketID direction, size_t data_len)
@ -303,7 +303,7 @@ TransferDescriptor* UHCIController::create_transfer_descriptor(Pipe& pipe, Packe
return td;
}
KResult UHCIController::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> UHCIController::create_chain(Pipe& pipe, PacketID direction, Ptr32<u8>& buffer_address, size_t max_size, size_t transfer_size, TransferDescriptor** td_chain, TransferDescriptor** last_td)
{
// We need to create `n` transfer descriptors based on the max
// size of each transfer (which we've learned from the device already by reading
@ -345,7 +345,7 @@ KResult UHCIController::create_chain(Pipe& pipe, PacketID direction, Ptr32<u8>&
*last_td = current_td;
*td_chain = first_td;
return KSuccess;
return {};
}
void UHCIController::free_descriptor_chain(TransferDescriptor* first_descriptor)
@ -361,7 +361,7 @@ void UHCIController::free_descriptor_chain(TransferDescriptor* first_descriptor)
}
}
KResultOr<size_t> UHCIController::submit_control_transfer(Transfer& transfer)
ErrorOr<size_t> UHCIController::submit_control_transfer(Transfer& transfer)
{
Pipe& pipe = transfer.pipe(); // Short circuit the pipe related to this transfer
bool direction_in = (transfer.request().request_type & USB_REQUEST_TRANSFER_DIRECTION_DEVICE_TO_HOST) == USB_REQUEST_TRANSFER_DIRECTION_DEVICE_TO_HOST;
@ -589,7 +589,7 @@ void UHCIController::reset_port(u8 port)
m_port_reset_change_statuses |= (1 << port);
}
KResult UHCIController::set_port_feature(Badge<UHCIRootHub>, u8 port, HubFeatureSelector feature_selector)
ErrorOr<void> UHCIController::set_port_feature(Badge<UHCIRootHub>, u8 port, HubFeatureSelector feature_selector)
{
// The check is done by UHCIRootHub.
VERIFY(port < NUMBER_OF_ROOT_PORTS);
@ -621,10 +621,10 @@ KResult UHCIController::set_port_feature(Badge<UHCIRootHub>, u8 port, HubFeature
return EINVAL;
}
return KSuccess;
return {};
}
KResult UHCIController::clear_port_feature(Badge<UHCIRootHub>, u8 port, HubFeatureSelector feature_selector)
ErrorOr<void> UHCIController::clear_port_feature(Badge<UHCIRootHub>, u8 port, HubFeatureSelector feature_selector)
{
// The check is done by UHCIRootHub.
VERIFY(port < NUMBER_OF_ROOT_PORTS);
@ -670,7 +670,7 @@ KResult UHCIController::clear_port_feature(Badge<UHCIRootHub>, u8 port, HubFeatu
else
write_portsc2(port_data);
return KSuccess;
return {};
}
}