system/serenity
system/serenity
1
0
Fork 0
mirror of https://github.com/SerenityOS/serenity synced 2024-07-22 10:36:24 +00:00
Code Issues Actions 5 Packages Projects Releases Wiki Activity

Kernel: Increase i8042 timeout when writing and reading from device

Browse source 
This proved to be crucial on my ICH7 test machine because it takes a bit
more time to do IO on its i8042 controller.
This commit is contained in:
Liav A 2022-03-19 11:31:32 +02:00 committed by Linus Groh
parent cbd343dced
commit 7ff6d4d72b
1 changed files with 3 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
Kernel/Devices/HID/I8042Controller.cpp
View file

@ -292,8 +292,8 @@ ErrorOr<u8> I8042Controller::do_write_to_device(HIDDevice::Type device, u8 data)
IO::out8(I8042Port::Buffer, data);
response = TRY(do_wait_then_read(I8042Port::Buffer));
} while (response == I8042Response::Resend && ++attempts < 3);
if (attempts >= 3)
} while (response == I8042Response::Resend && ++attempts < 250);
if (attempts >= 250)
dbgln("Failed to write byte to device, gave up");
return response;
}
@ -310,7 +310,7 @@ ErrorOr<void> I8042Controller::prepare_for_input(HIDDevice::Type device)
{
VERIFY(m_lock.is_locked());
u8 const second_port_flag = device == HIDDevice::Type::Keyboard ? 0 : I8042StatusFlag::SecondPS2PortOutputBuffer;
for (int attempt = 0; attempt < 250; attempt++) {
for (int attempt = 0; attempt < 1000; attempt++) {
u8 status = IO::in8(I8042Port::Status);
if (!(status & I8042StatusFlag::OutputBuffer)) {
IO::delay(1000);