[SRU] [Unstable/OEM-5.10] [PATCH 0/1] Use INTx for Pericom USB controllers

[Kai-Heng Feng]

BugLink: https://bugs.launchpad.net/bugs/1906839

[Impact]
Pericom EHCI/OHCI controller cannot detect USB hotplug after using MSI.

[Fix]
Disable MSI and fallback to INTx.

[Test]
Hotplug any USB device and nothing gets detected.
With the fix applied the issue is gone.

[Where problems could occur]
Nothing wrong can happen. It was already using INTx before 306c54d0edb6
("usb: hcd: Try MSI interrupts on PCI devices"), and now it goes back to
use INTx again.

Andy Shevchenko (1):
  PCI: Disable MSI for Pericom PCIe-USB adapter

 drivers/pci/quirks.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

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2.29.2