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scsi: core: Reduce number of scsi_test_unit_ready() retries 

Make scsi_test_unit_ready() send at most as many TURs as specified in
the 'retries' argument instead of retries * (retries + 1) / 2.

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bart Van Assche 2018-02-12 10:57:52 -08:00 committed by Martin K. Petersen
parent 9866306795
commit 9b91fd34b4
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/scsi_lib.c
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@ -2607,7 +2607,7 @@ scsi_test_unit_ready(struct scsi_device *sdev, int timeout, int retries,
/* try to eat the UNIT_ATTENTION if there are enough retries */
do {
result = scsi_execute_req(sdev, cmd, DMA_NONE, NULL, 0, sshdr,
timeout, retries, NULL);
timeout, 1, NULL);
if (sdev->removable && scsi_sense_valid(sshdr) &&
sshdr->sense_key == UNIT_ATTENTION)
sdev->changed = 1;