linux-kernel - Re: [PATCH] usb: xhci: Increase timeout for HC halt

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Message-ID: <1f912115-b46d-b1b2-54b4-f1b2bcd0ef8a@gmail.com>
Date:   Tue, 11 May 2021 10:40:13 +0200
From:   Maximilian Luz <luzmaximilian@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Mathias Nyman <mathias.nyman@...el.com>, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] usb: xhci: Increase timeout for HC halt

On 5/11/21 8:26 AM, Greg Kroah-Hartman wrote:
> On Tue, May 11, 2021 at 02:29:33AM +0200, Maximilian Luz wrote:
>> On some devices (specifically the SC8180x based Surface Pro X with
>> QCOM04A6) HC halt / xhci_halt() times out during boot. Manually binding
>> the xhci-hcd driver at some point later does not exhibit this behavior.
>> To work around this, double XHCI_MAX_HALT_USEC, which also resolves this
>> issue.
>>
>> Signed-off-by: Maximilian Luz <luzmaximilian@...il.com>
>> ---
>>   drivers/usb/host/xhci-ext-caps.h | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> Should this go to stable kernels as well?

Ah sorry, didn't think about that since the device in question currently
requires a couple of other fixes to be usable. But I guess it would be good
to have this in stable.

Regards,
Max