Re: [PATCH v5 1/7] scsi: ufs: Add device reset in link recovery path

Stanley Chu
2019-11-15T06:25:24Z

Hi Can,

On Thu, 2019-11-14 at 22:09 -0800, Can Guo wrote:
> In order to recover from hibern8 exit failure, perform a reset in
> link recovery path before issuing link start-up.
>
> Signed-off-by: Can Guo <cang@codeaurora.org>
> Reviewed-by: Bean Huo <beanhuo@micron.com>
> ---
> drivers/scsi/ufs/ufshcd.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index c28c144..525f8e6 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -3859,6 +3859,9 @@ static int ufshcd_link_recovery(struct ufs_hba *hba)
> ufshcd_set_eh_in_progress(hba);
> spin_unlock_irqrestore(hba->host->host_lock, flags);
>
> + /* Reset the attached device */
> + ufshcd_vops_device_reset(hba);
> +
> ret = ufshcd_host_reset_and_restore(hba);
>
> spin_lock_irqsave(hba->host->host_lock, flags);

Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>