On 7/13/20 9:46 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/aic7xxx_osm.c: In function ‘ahc_done’:
  drivers/scsi/aic7xxx/aic7xxx_osm.c:1725:12: warning: variable 
‘amount_xferred’ set but not used [-Wunused-but-set-variable]
  1725 | uint32_t amount_xferred;
  | ^~~~~~~~~~~~~~

Cc: Hannes Reinecke <h...@suse.com>
Cc: "Daniel M. Eischen" <deisc...@iworks.interworks.org>
Cc: Doug Ledford <dledf...@redhat.com>
Signed-off-by: Lee Jones <lee.jo...@linaro.org>
---
  drivers/scsi/aic7xxx/aic7xxx_osm.c | 2 ++
  1 file changed, 2 insertions(+)

diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c 
b/drivers/scsi/aic7xxx/aic7xxx_osm.c
index ed437c16de881..e7ccb8b80fc19 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
@@ -1711,10 +1711,12 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb)
         */
        cmd->sense_buffer[0] = 0;
        if (ahc_get_transaction_status(scb) == CAM_REQ_INPROG) {
+#ifdef AHC_REPORT_UNDERFLOWS
                uint32_t amount_xferred;
amount_xferred =
                    ahc_get_transfer_length(scb) - ahc_get_residual(scb);
+#endif
                if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) {
  #ifdef AHC_DEBUG
                        if ((ahc_debug & AHC_SHOW_MISC) != 0) {

Reviewed-by: Hannes Reinecke <h...@suse.de>

Cheers,

Hannes
--
Dr. Hannes Reinecke            Teamlead Storage & Networking
h...@suse.de                               +49 911 74053 688
SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), Geschäftsführer: Felix Imendörffer

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