diff mbox series

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

Message ID 20200713080001.128044-24-lee.jones@linaro.org (mailing list archive)
State Accepted
Headers show
Series Set 3: Fix another set of SCSI related W=1 warnings | expand

Commit Message

Lee Jones July 13, 2020, 8 a.m. UTC
'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 <hare@suse.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
 drivers/scsi/aic7xxx/aic79xx_osm.c | 2 ++
 1 file changed, 2 insertions(+)

Comments

Hannes Reinecke July 14, 2020, 7:47 a.m. UTC | #1
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 <hare@suse.com>
> Signed-off-by: Lee Jones <lee.jones@linaro.org>
> ---
>  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 <hare@suse.de>

Cheers,

Hannes
diff mbox series

Patch

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) {