linux-kernel - Re: [PATCH] usb: xhci-plat: fix usb disconnect issue after s4

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Message-ID: <259bb67c-954b-7c7c-543e-a307ea6519d0@loongson.cn>
Date:   Thu, 3 Aug 2023 10:19:16 +0800
From:   Yinbo Zhu <zhuyinbo@...ngson.cn>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Mathias Nyman <mathias.nyman@...el.com>, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jianmin Lv <lvjianmin@...ngson.cn>,
        wanghongliang@...ngson.cn, Liu Peibao <liupeibao@...ngson.cn>,
        loongson-kernel@...ts.loongnix.cn, zhuyinbo@...ngson.cn
Subject: Re: [PATCH] usb: xhci-plat: fix usb disconnect issue after s4



在 2023/8/2 下午6:06, Greg Kroah-Hartman 写道:
> On Wed, Aug 02, 2023 at 05:58:17PM +0800, Yinbo Zhu wrote:
>>
>>
>> 在 2023/8/2 下午5:39, Greg Kroah-Hartman 写道:
>>> On Wed, Aug 02, 2023 at 05:06:42PM +0800, Yinbo Zhu wrote:
>>>> The xhci retaining bogus hardware states cause usb disconnect devices
>>>> connected before hibernation(s4) and refer to the commit '547d55fa83
>>>> ("usb: ohci-platform: fix usb disconnect issue after s4")' which set
>>>> flag "hibernated" as true when resume-from-hibernation and that the
>>>> drivers will reset the hardware to get rid of any existing state and
>>>> make sure resume from hibernation re-enumerates everything for xhci.
>>>>
>>>> Signed-off-by: Yinbo Zhu <zhuyinbo@...ngson.cn>
>>>> ---
>>>>    drivers/usb/host/xhci-plat.c | 21 ++++++++++++++++++---
>>>>    1 file changed, 18 insertions(+), 3 deletions(-)
>>>
>>> What commit id does this fix?
>>>
>>> Should it go to stable kernels?
>>
>>
>> Sorry, perhaps it has been rebased, that tree was mainline tree next
>> branch, you can find this commit id "f3d478858bec4"
> 
> Please fix this up and add a proper Fixes: line and if needed a cc:
> stable line.


Sorry, I don't quite understand what you mean.

Thanks,
Yinbo.