APPLIED [OEM-5.10] Re: [SRU] [Unstable/OEM-5.10] [PATCH 0/1] Use INTx for Pericom USB controllers
Timo Aaltonen
tjaalton at ubuntu.com
Tue Dec 8 14:17:39 UTC 2020
On 4.12.2020 16.21, 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 oem-5.10, thanks
--
t
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