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Kernel: Add boot argument to disable the UHCI Controller

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Helps with bare metal debugging, as we can't be sure our implementation
will work with a given machine.

As reported by someone on Discord, their machine hangs when we attempt
the dummy transfer.
This commit is contained in:
Luke 2021-04-17 20:36:53 +01:00 • committed by Andreas Kling
parent e98091ad15
commit c84107a1ab
4 changed files with 16 additions and 3 deletions
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5
Kernel/Devices/USB/UHCIController.cpp
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@ -26,7 +26,7 @@
*/
#include <AK/Platform.h>
#include <Kernel/CommandLine.h>
#include <Kernel/Debug.h>
#include <Kernel/Devices/USB/UHCIController.h>
#include <Kernel/Process.h>
@ -89,6 +89,9 @@ UHCIController& UHCIController::the()
UNMAP_AFTER_INIT void UHCIController::detect()
{
if (kernel_command_line().disable_uhci_controller())
return;
PCI::enumerate([&](const PCI::Address& address, PCI::ID id) {
if (address.is_null())
return;