diff mbox series

[v8,13/33] scsi: rdac: Fix sshdr use

Message ID 20230614071719.6372-14-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, 7:16 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/device_handler/scsi_dh_rdac.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

Comments

Christoph Hellwig June 14, 2023, 2:34 p.m. UTC | #1 
Looks good:

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

Patch

diff --git a/drivers/scsi/device_handler/scsi_dh_rdac.c b/drivers/scsi/device_handler/scsi_dh_rdac.c
index c5538645057a..cdefaa9f614e 100644
--- a/drivers/scsi/device_handler/scsi_dh_rdac.c
+++ b/drivers/scsi/device_handler/scsi_dh_rdac.c
@@ -541,6 +541,7 @@  static void send_mode_select(struct work_struct *work)
 	const struct scsi_exec_args exec_args = {
 		.sshdr = &sshdr,
 	};
+	int rc;
 
 	spin_lock(&ctlr->ms_lock);
 	list_splice_init(&ctlr->ms_head, &list);
@@ -558,14 +559,18 @@  static void send_mode_select(struct work_struct *work)
 		(char *) h->ctlr->array_name, h->ctlr->index,
 		(retry_cnt == RDAC_RETRY_COUNT) ? "queueing" : "retrying");
 
-	if (scsi_execute_cmd(sdev, cdb, opf, &h->ctlr->mode_select, data_size,
-			     RDAC_TIMEOUT * HZ, RDAC_RETRIES, &exec_args)) {
+	rc = scsi_execute_cmd(sdev, cdb, opf, &h->ctlr->mode_select, data_size,
+			      RDAC_TIMEOUT * HZ, RDAC_RETRIES, &exec_args);
+	if (rc < 0) {
+		err = SCSI_DH_IO;
+	} else if (rc > 0) {
 		err = mode_select_handle_sense(sdev, &sshdr);
 		if (err == SCSI_DH_RETRY && retry_cnt--)
 			goto retry;
 		if (err == SCSI_DH_IMM_RETRY)
 			goto retry;
 	}
+
 	if (err == SCSI_DH_OK) {
 		h->state = RDAC_STATE_ACTIVE;
 		RDAC_LOG(RDAC_LOG_FAILOVER, sdev, "array %s, ctlr %d, "