From: Kevin Barnett <kevin.barnett@xxxxxxx>
Add check for controller lockup during waits for synchronous
controller commands.
Reviewed-by: Scott Benesh <scott.benesh@xxxxxxxxxxxxx>
Signed-off-by: Kevin Barnett <kevin.barnett@xxxxxxxxxxxxx>
Signed-off-by: Don Brace <don.brace@xxxxxxxxxxxxx>
---
drivers/scsi/smartpqi/smartpqi_init.c | 33 ++++++++++++++++++++++++++++++++-
1 file changed, 32 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c
index 6f31cd9..586a1d5 100644
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -3578,6 +3578,37 @@ static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
spin_unlock_irqrestore(&queue_group->submit_lock[path], flags);
}
+#define PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS 10
+
+static int pqi_wait_for_completion_io(struct pqi_ctrl_info *ctrl_info,
+ struct completion *wait)
+{
+ int rc;
+ unsigned int wait_secs = 0;
+
+ while (1) {
+ if (wait_for_completion_io_timeout(wait,
+ PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * HZ)) {
+ rc = 0;
+ break;
+ }
+
+ pqi_check_ctrl_health(ctrl_info);
+ if (pqi_ctrl_offline(ctrl_info)) {
+ rc = -ENXIO;
+ break;
+ }
+
+ wait_secs += PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS;
+
+ dev_err(&ctrl_info->pci_dev->dev,
+ "waiting %u seconds for completion\n",
+ wait_secs);
+ }
+
+ return rc;
+}
+
static void pqi_raid_synchronous_complete(struct pqi_io_request *io_request,
void *context)
{
@@ -3601,7 +3632,7 @@ static int pqi_submit_raid_request_synchronous_with_io_request(
io_request);
if (timeout_msecs == NO_TIMEOUT) {
- wait_for_completion_io(&wait);
+ pqi_wait_for_completion_io(ctrl_info, &wait);
} else {
if (!wait_for_completion_io_timeout(&wait,
msecs_to_jiffies(timeout_msecs))) {
