diff mbox series

[v8,21/33] scsi: Have scsi-ml retry scsi_mode_sense UAs

Message ID 20230614071719.6372-22-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 
This has scsi_mode_sense have scsi-ml retry UAs instead of driving them
itself.

Signed-off-by: Mike Christie <michael.christie@oracle.com>
---
 drivers/scsi/scsi_lib.c | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

Comments

Christoph Hellwig June 16, 2023, 7:20 a.m. UTC | #1 
On Wed, Jun 14, 2023 at 02:17:07AM -0500, Mike Christie wrote:
> This has scsi_mode_sense have scsi-ml retry UAs instead of driving them
> itself.

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 f539fc4b7148..0d28920d088c 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -2186,11 +2186,22 @@  scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage, int subpage,
 	unsigned char cmd[12];
 	int use_10_for_ms;
 	int header_length;
-	int result, retry_count = retries;
+	int result;
 	struct scsi_sense_hdr my_sshdr;
+	struct scsi_failure failures[] = {
+		{
+			.sense = UNIT_ATTENTION,
+			.asc = SCMD_FAILURE_ASC_ANY,
+			.ascq = SCMD_FAILURE_ASCQ_ANY,
+			.allowed = retries,
+			.result = SAM_STAT_CHECK_CONDITION,
+		},
+		{},
+	};
 	const struct scsi_exec_args exec_args = {
 		/* caller might not be interested in sense, but we need it */
 		.sshdr = sshdr ? : &my_sshdr,
+		.failures = failures,
 	};
 
 	memset(data, 0, sizeof(*data));
@@ -2252,12 +2263,6 @@  scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage, int subpage,
 					goto retry;
 				}
 			}
-			if (scsi_status_is_check_condition(result) &&
-			    sshdr->sense_key == UNIT_ATTENTION &&
-			    retry_count) {
-				retry_count--;
-				goto retry;
-			}
 		}
 		return -EIO;
 	}