The only check for a valid sense code is calling scsi_normalize_sense()
and check the return value. So drop the pointless checks and rely on
scsi_normalize_sense() to figure out if the sense code is valid.
With that we can also remove the 'senselen' field.
Reviewed-by: Johannes Thumshirn <jthumshirn@xxxxxxxx>
Reviewed-by: Bart van Assche <bvanassche@xxxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
---
drivers/scsi/device_handler/scsi_dh_alua.c | 18 +++++++-----------
1 file changed, 7 insertions(+), 11 deletions(-)
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index c63f304..240a5dc 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -73,7 +73,6 @@ struct alua_dh_data {
int bufflen;
unsigned char transition_tmo;
unsigned char sense[SCSI_SENSE_BUFFERSIZE];
- int senselen;
struct scsi_device *sdev;
activate_complete callback_fn;
void *callback_data;
@@ -158,14 +157,13 @@ static unsigned submit_rtpg(struct scsi_device *sdev, struct alua_dh_data *h,
rq->sense = h->sense;
memset(rq->sense, 0, SCSI_SENSE_BUFFERSIZE);
- rq->sense_len = h->senselen = 0;
+ rq->sense_len = 0;
err = blk_execute_rq(rq->q, NULL, rq, 1);
if (err == -EIO) {
sdev_printk(KERN_INFO, sdev,
"%s: rtpg failed with %x\n",
ALUA_DH_NAME, rq->errors);
- h->senselen = rq->sense_len;
err = SCSI_DH_IO;
}
blk_put_request(rq);
@@ -194,9 +192,8 @@ static void stpg_endio(struct request *req, int error)
goto done;
}
- if (req->sense_len > 0) {
- err = scsi_normalize_sense(h->sense, SCSI_SENSE_BUFFERSIZE,
- &sense_hdr);
+ if (scsi_normalize_sense(h->sense, SCSI_SENSE_BUFFERSIZE,
+ &sense_hdr)) {
if (!err) {
err = SCSI_DH_IO;
goto done;
@@ -265,7 +262,7 @@ static unsigned submit_stpg(struct alua_dh_data *h)
rq->sense = h->sense;
memset(rq->sense, 0, SCSI_SENSE_BUFFERSIZE);
- rq->sense_len = h->senselen = 0;
+ rq->sense_len = 0;
rq->end_io_data = h;
blk_execute_rq_nowait(rq->q, NULL, rq, 1, stpg_endio);
@@ -514,10 +511,9 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_dh_data *h, int wait_
retry:
err = submit_rtpg(sdev, h, rtpg_ext_hdr_req);
- if (err == SCSI_DH_IO && h->senselen > 0) {
- err = scsi_normalize_sense(h->sense, SCSI_SENSE_BUFFERSIZE,
- &sense_hdr);
- if (!err)
+ if (err == SCSI_DH_IO) {
+ if (!scsi_normalize_sense(h->sense, SCSI_SENSE_BUFFERSIZE,
+ &sense_hdr))
return SCSI_DH_IO;
/*
--
1.8.5.6
--
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