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SubjectRe: [PATCH] scsi: core: Fix block I/O error of USB card reader during resume
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On 8/27/2022 6:05 AM, Bart Van Assche wrote:
> On 8/23/22 03:16, Michael Wu wrote:
>> Yes... My patch did seem suspicious. Here's the scene about the block
>> I/O error: Some card reader does not respond the command 'MEDIUM
>> REMOVAL PREVENT' correctly, as a result, the host does not send
>> subsequent cmd 'MEDIUM REMOVAL ALLOW'/'MEDIUM REMOVAL PREVENT'
>> before/after sleep, which leads to a enumeration failure after system
>> resume.
>> I wonder, without changing the behavior of the device, is there's a
>> better way to solve this? -- Modifying the scsi core should not be a
>> good idea though :(
>
> The above is not clear to me. My understanding is that "MEDIUM REMOVAL
> PREVENT" is a sense code instead of a SCSI command?
>
>> Thanks for your kindly notice. I looked around in the latest linux
>> mainline repo, but could not find this code. Where can I get this 2002
>> version of scsi_lib.c? Thank you.
>
> Please take a look at
> https://stackoverflow.com/questions/3264283/linux-kernel-historical-git-repository-with-full-history.
> That web page has instructions for how to configure a git repository
> such that history goes back before the time when Linus started using git.
>
> Bart.
>
Dear Bart,
Thank you. I'll try to figure it out and sync to you later.

--
Regards,
Michael Wu

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