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authorBart Van Assche <bart.vanassche@wdc.com>2017-08-25 13:46:33 -0700
committerMartin K. Petersen <martin.petersen@oracle.com>2017-08-25 17:08:08 -0400
commit0624cbb1e2e64ae4d7d55dc81fc39a0af87a2bd7 (patch)
treee070944a3dd8aeb9583276371d5fa412a3b4e721
parentbed2213d01de474eb8a6f3891070eec6be6fe772 (diff)
scsi: sd: sr: Convert two assignments into warning statements
Before scsi_prep_fn() calls the ULP .init_command() callback function it stores the SCSI command pointer in request.special. This means that the SCpnt = rq->special assignments in the sd and sr drivers assign a pointer to itself. Hence convert these two assignment statements into warning statements. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
-rw-r--r--drivers/scsi/sd.c2
-rw-r--r--drivers/scsi/sr.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index bea36adeee17..a88639fbedb3 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1013,7 +1013,7 @@ static int sd_setup_read_write_cmnd(struct scsi_cmnd *SCpnt)
ret = scsi_init_io(SCpnt);
if (ret != BLKPREP_OK)
goto out;
- SCpnt = rq->special;
+ WARN_ON_ONCE(SCpnt != rq->special);
/* from here on until we're complete, any goto out
* is used for a killable error condition */
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index a8f630213a1a..9be34d37c356 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -393,7 +393,7 @@ static int sr_init_command(struct scsi_cmnd *SCpnt)
ret = scsi_init_io(SCpnt);
if (ret != BLKPREP_OK)
goto out;
- SCpnt = rq->special;
+ WARN_ON_ONCE(SCpnt != rq->special);
cd = scsi_cd(rq->rq_disk);
/* from here on until we're complete, any goto out