Date:   Fri, 17 Dec 2021 15:57:21 +0100
From:   Greg KH <greg@kroah.com>
To:     Adrian Hunter <adrian.hunter@intel.com>
Cc:     stable@vger.kernel.org
Subject: Re: [PATCH 5.15] scsi: ufs: core: Retry START_STOP on UNIT_ATTENTION
Message-ID: <YbylUdf6KLwbdHJ3@kroah.com>
References: <20211216100749.202131-1-adrian.hunter@intel.com>
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On Thu, Dec 16, 2021 at 12:07:49PM +0200, Adrian Hunter wrote:
> From: Jaegeuk Kim <jaegeuk@kernel.org>
> 
> commit af21c3fd5b3ec540a97b367a70b26616ff7e0c55 upstream.
> 
> Note for stable: This patch is required if commit edc0596cc04bf ("scsi:
> ufs: core: Stop clearing UNIT ATTENTIONS") has been cherry-picked.
> 
> Commit 57d104c153d3 ("ufs: add UFS power management support") made the UFS
> driver submit a REQUEST SENSE command before submitting a power management
> command to a WLUN to clear the POWER ON unit attention. Instead of
> submitting a REQUEST SENSE command before submitting a power management
> command, retry the power management command until it succeeds.
> 
> This is the preparation to get rid of all UNIT ATTENTION code which should
> be handled by users.
> 
> Link: https://lore.kernel.org/r/20211001182015.1347587-2-jaegeuk@kernel.org
> Cc: Adrian Hunter <adrian.hunter@intel.com>
> Reviewed-by: Bart Van Assche <bvanassche@acm.org>
> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
> [Adrian: For stable]
> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
> ---
>  drivers/scsi/ufs/ufshcd.c | 12 +++++++++---
>  1 file changed, 9 insertions(+), 3 deletions(-)

Now queued up, thanks.

greg k-h