Re: [PATCH 2/3] Revert "usb: xhci-pci: Set PROBE_PREFER_ASYNCHRONOUS"

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On 30.3.2023 17.40, Greg KH wrote:
On Thu, Mar 30, 2023 at 05:30:55PM +0300, Mathias Nyman wrote:
This reverts commit 4c2604a9a6899bab195edbee35fc8d64ce1444aa.

Asynch probe caused regression in a setup with both Renesas and Intel xHC
controllers. Devices connected to the Renesas disconnected shortly after
boot. With Asynch probe the busnumbers got interleaved.

xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 1
xhci_hcd 0000:04:00.0: new USB bus registered, assigned bus number 2
xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 3
xhci_hcd 0000:04:00.0: new USB bus registered, assigned bus number 4

Reason why this commit causes regression is still unknown, but revert it
while debugging the issue.

Link: https://lore.kernel.org/linux-usb/20230307132120.5897c5af@xxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>

I'll add a Fixes: and cc: stable on this, ok?

Yes, please.

Thanks
Mathias




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