snic: Fixing race in the hba reset and IO/TM completion

While HBA reset is in progress, if IO/TM completion is received for the
same IO then IO/TM completion path releases the driver private resources
associated with IO. This fix prevents releasing the resources in
IO and TM completion path if HBA reset is in progress.

Signed-off-by: Narsimhulu Musini <nmusini@cisco.com>
Signed-off-by: Sesidhar Baddela <sebaddel@cisco.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/scsi/snic/snic.h b/drivers/scsi/snic/snic.h
index d7f5ba6ba84c..8ed778d4dbb9 100644
--- a/drivers/scsi/snic/snic.h
+++ b/drivers/scsi/snic/snic.h
@@ -95,6 +95,8 @@
 #define SNIC_DEV_RST_NOTSUP             BIT(25)
 #define SNIC_SCSI_CLEANUP               BIT(26)
 #define SNIC_HOST_RESET_ISSUED          BIT(27)
+#define SNIC_HOST_RESET_CMD_TERM        \
+        (SNIC_DEV_RST_NOTSUP | SNIC_SCSI_CLEANUP | SNIC_HOST_RESET_ISSUED)
 
 #define SNIC_ABTS_TIMEOUT               30000           /* msec */
 #define SNIC_LUN_RESET_TIMEOUT          30000           /* msec */
@@ -216,9 +218,10 @@ enum snic_msix_intr_index {
         SNIC_MSIX_INTR_MAX,
 };
 
+#define SNIC_INTRHDLR_NAMSZ     (2 * IFNAMSIZ)
 struct snic_msix_entry {
         int requested;
-        char devname[IFNAMSIZ];
+        char devname[SNIC_INTRHDLR_NAMSZ];
         irqreturn_t (*isr)(int, void *);
         void *devid;
 };