Re: [PATCH v2 23/24] scsi: aic7xxx: aic79xx_osm: Fix 'amount_xferred' set but not used issue

2020-07-14 Thread Hannes Reinecke
On 7/13/20 10:00 AM, Lee Jones wrote:
> 'amount_xferred' is used, but only in certain circumstances.  Place
> the same stipulations on the defining/allocating of 'amount_xferred'
> as is placed when using it.
> 
> We've been careful not to change any of the ordering semantics here.
> 
> Fixes the following W=1 kernel build warning(s):
> 
>  drivers/scsi/aic7xxx/aic79xx_osm.c: In function ‘ahd_done’:
>  drivers/scsi/aic7xxx/aic79xx_osm.c:1796:12: warning: variable 
> ‘amount_xferred’ set but not used [-Wunused-but-set-variable]
> 
> Cc: Hannes Reinecke 
> Signed-off-by: Lee Jones 
> ---
>  drivers/scsi/aic7xxx/aic79xx_osm.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c 
> b/drivers/scsi/aic7xxx/aic79xx_osm.c
> index 8e43ff86e0a60..3782a20d58885 100644
> --- a/drivers/scsi/aic7xxx/aic79xx_osm.c
> +++ b/drivers/scsi/aic7xxx/aic79xx_osm.c
> @@ -1787,10 +1787,12 @@ ahd_done(struct ahd_softc *ahd, struct scb *scb)
>*/
>   cmd->sense_buffer[0] = 0;
>   if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) {
> +#ifdef AHD_REPORT_UNDERFLOWS
>   uint32_t amount_xferred;
>  
>   amount_xferred =
>   ahd_get_transfer_length(scb) - ahd_get_residual(scb);
> +#endif
>   if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) {
>  #ifdef AHD_DEBUG
>   if ((ahd_debug & AHD_SHOW_MISC) != 0) {
> 
Reviewed-by: Hannes Reinecke 

Cheers,

Hannes
-- 
Dr. Hannes ReineckeKernel Storage Architect
h...@suse.de  +49 911 74053 688
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), GF: Felix Imendörffer


[PATCH v2 23/24] scsi: aic7xxx: aic79xx_osm: Fix 'amount_xferred' set but not used issue

2020-07-13 Thread Lee Jones
'amount_xferred' is used, but only in certain circumstances.  Place
the same stipulations on the defining/allocating of 'amount_xferred'
as is placed when using it.

We've been careful not to change any of the ordering semantics here.

Fixes the following W=1 kernel build warning(s):

 drivers/scsi/aic7xxx/aic79xx_osm.c: In function ‘ahd_done’:
 drivers/scsi/aic7xxx/aic79xx_osm.c:1796:12: warning: variable ‘amount_xferred’ 
set but not used [-Wunused-but-set-variable]

Cc: Hannes Reinecke 
Signed-off-by: Lee Jones 
---
 drivers/scsi/aic7xxx/aic79xx_osm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c 
b/drivers/scsi/aic7xxx/aic79xx_osm.c
index 8e43ff86e0a60..3782a20d58885 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm.c
@@ -1787,10 +1787,12 @@ ahd_done(struct ahd_softc *ahd, struct scb *scb)
 */
cmd->sense_buffer[0] = 0;
if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) {
+#ifdef AHD_REPORT_UNDERFLOWS
uint32_t amount_xferred;
 
amount_xferred =
ahd_get_transfer_length(scb) - ahd_get_residual(scb);
+#endif
if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) {
 #ifdef AHD_DEBUG
if ((ahd_debug & AHD_SHOW_MISC) != 0) {
-- 
2.25.1