RE: [PATCH] scsi: ufs: Fix NOP OUT timeout value

[Daejun Park]

> In some Samsung UFS devices, there is some booting fail issue with
> low-power UFS device. The reason of this issue is the UFS device has a
> little bit longer latency for NOP OUT response. It causes booting fail
> because NOP OUT command is issued during initialization to check whether
> the device transport protocol is ready or not. This issue is resolved by
> releasing NOP_OUT_TIMEOUT value.
> 
> NOP_OUT_TIMEOUT: 30ms -> 50ms
> 
> Signed-off-by: Daejun Park <daejun7.park@xxxxxxxxxxx>
> ---
>  drivers/scsi/ufs/ufshcd.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index 06e2439d523c..5cbd0e9e4ef8 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -36,8 +36,8 @@
>  
>  /* NOP OUT retries waiting for NOP IN response */
>  #define NOP_OUT_RETRIES    10
> -/* Timeout after 30 msecs if NOP OUT hangs without response */
> -#define NOP_OUT_TIMEOUT    30 /* msecs */
> +/* Timeout after 50 msecs if NOP OUT hangs without response */
> +#define NOP_OUT_TIMEOUT    50 /* msecs */
>  
>  /* Query request retries */
>  #define QUERY_REQ_RETRIES 3
> -- 
> 2.17.1

Hello,

Just a gentle reminder that I'd like some feedback.
Any suggestions here?

Thanks,
Daejun