From: Tej Parkash <tej.parkash@xxxxxxxxxx>
Issue:
Pending IO wait does not complete after triggering Graceful reset,
causing ack timeout and call traces.
Fix:
1. Reducing the IO command wait timeout before triggering reset,
as logically also timeout should be less than reset timeout (10sec).
2. Moving the abort IO after chip reset, because only after
chip reset, driver owns the IO otherwise it is with firmware and can
still revert back with response.
Signed-off-by: Tej Parkash <tej.parkash@xxxxxxxxxx>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@xxxxxxxxxx>
---
drivers/scsi/qla4xxx/ql4_def.h | 2 +-
drivers/scsi/qla4xxx/ql4_os.c | 16 ++++++++++++----
2 files changed, 13 insertions(+), 5 deletions(-)
diff --git a/drivers/scsi/qla4xxx/ql4_def.h b/drivers/scsi/qla4xxx/ql4_def.h
index 33eae2e..c2deaa0 100644
--- a/drivers/scsi/qla4xxx/ql4_def.h
+++ b/drivers/scsi/qla4xxx/ql4_def.h
@@ -194,7 +194,7 @@
#define ADAPTER_INIT_TOV 30
#define ADAPTER_RESET_TOV 180
#define EXTEND_CMD_TOV 60
-#define WAIT_CMD_TOV 30
+#define WAIT_CMD_TOV 5
#define EH_WAIT_CMD_TOV 120
#define FIRMWARE_UP_TOV 60
#define RESET_FIRMWARE_TOV 30
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 3fec116..a27da31 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -4561,11 +4561,19 @@ static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
uint32_t index = 0;
unsigned long flags;
struct scsi_cmnd *cmd;
+ unsigned long wtime;
+ uint32_t wtmo;
- unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
+ if (is_qla40XX(ha))
+ wtmo = WAIT_CMD_TOV;
+ else
+ wtmo = ha->nx_reset_timeout / 2;
- DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
- "complete\n", WAIT_CMD_TOV));
+ wtime = jiffies + (wtmo * HZ);
+
+ DEBUG2(ql4_printk(KERN_INFO, ha,
+ "Wait up to %u seconds for cmds to complete\n",
+ wtmo));
while (!time_after_eq(jiffies, wtime)) {
spin_lock_irqsave(&ha->hardware_lock, flags);
@@ -4868,11 +4876,11 @@ chip_reset:
qla4xxx_cmd_wait(ha);
qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
- qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
DEBUG2(ql4_printk(KERN_INFO, ha,
"scsi%ld: %s - Performing chip reset..\n",
ha->host_no, __func__));
status = ha->isp_ops->reset_chip(ha);
+ qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
}
/* Flush any pending ddb changed AENs */
--
1.8.2.GIT
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