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

[Andrea Righi]

On Fri, Dec 04, 2020 at 10:21:54PM +0800, Kai-Heng Feng wrote:
> 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(-)

Applied to unstable, thanks.

-Andrea