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

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Message-ID: <4ee866a1-39a4-3b88-20f6-108e605ab00e@loongson.cn>
Date:   Wed, 2 Aug 2023 17:58:17 +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"

Thanks,
Yinbo