linux-kernel - Re: [PATCH v6 0/3] fix runtime PM for SD card readers

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Date:   Wed, 21 Jul 2021 23:59:02 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Martin Kepplinger <martin.kepplinger@...i.sm>
Cc:     bvanassche@....org, hch@...radead.org, jejb@...ux.ibm.com,
        kernel@...i.sm, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-scsi@...r.kernel.org,
        martin.petersen@...cle.com, stern@...land.harvard.edu
Subject: Re: [PATCH v6 0/3] fix runtime PM for SD card readers


Martin,

> (According to Alan Stern, "as far as I know, all") SD card readers
> send MEDIA_CHANGED unit attention notification on (runtime) resume. We
> cannot use runtime PM with these devices as I/O always fails in that
> case.

Made a few changes (added "ignore" to clarify what the flag does and
twiddled how the workaround is triggered in sd.c). Applied to
5.15/scsi-staging, thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering