diff mbox series

[v8,29/33] scsi: Fix sshdr use in scsi_test_unit_ready

Message ID 20230614071719.6372-30-michael.christie@oracle.com (mailing list archive)
State Changes Requested
Headers show
Series scsi: Allow scsi_execute users to control retries | expand

Commit Message

Mike Christie June 14, 2023, 7:17 a.m. UTC 
If scsi_execute_cmd returns < 0 it will not have set the sshdr, so we
can't access it.

Signed-off-by: Mike Christie <michael.christie@oracle.com>
---
 drivers/scsi/scsi_lib.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Christoph Hellwig June 16, 2023, 7:22 a.m. UTC | #1 
Looks good:

Reviewed-by: Christoph Hellwig <hch@lst.de>
diff mbox series

Patch

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 0d28920d088c..f57f928f267f 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -2319,10 +2319,10 @@  scsi_test_unit_ready(struct scsi_device *sdev, int timeout, int retries,
 	do {
 		result = scsi_execute_cmd(sdev, cmd, REQ_OP_DRV_IN, NULL, 0,
 					  timeout, 1, &exec_args);
-		if (sdev->removable && scsi_sense_valid(sshdr) &&
+		if (sdev->removable && result > 0 && scsi_sense_valid(sshdr) &&
 		    sshdr->sense_key == UNIT_ATTENTION)
 			sdev->changed = 1;
-	} while (scsi_sense_valid(sshdr) &&
+	} while (result > 0 && scsi_sense_valid(sshdr) &&
 		 sshdr->sense_key == UNIT_ATTENTION && --retries);
 
 	return result;