Re: [patch 1/2 -resend] SCSI: advansys: handle errors from scsi_dma_map()

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Am 27.06.2012 11:00, schrieb Dan Carpenter:
> scsi_dma_map() returns -ENOMEM on error.
> 
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> ---
> Originally sent on Tue, 20 Sep 2011.
> 
> diff --git a/drivers/scsi/advansys.c b/drivers/scsi/advansys.c
> index 374c4ed..b2c3a1a 100644
> --- a/drivers/scsi/advansys.c
> +++ b/drivers/scsi/advansys.c
> @@ -8426,6 +8426,12 @@ static int asc_build_req(struct asc_board *boardp, struct scsi_cmnd *scp,
>  
>  	/* Build ASC_SCSI_Q */
>  	use_sg = scsi_dma_map(scp);
> +	if (use_sg < 0) {
> +		scsi_dma_unmap(scp);
> +		scp->result = HOST_BYTE(DID_SOFT_ERROR);
> +		return ASC_ERROR;
> +	}
> +
>  	if (use_sg != 0) {
>  		int sgcnt;
>  		struct scatterlist *slp;

Q:if use_sg == 0 a special case ?

re,
 wh

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