diff mbox series

[v4,3/9] qedf: Acquire rport_lock for resetting the delay_timestamp

Message ID 20200416084314.18851-4-skashyap@marvell.com (mailing list archive)
State Accepted
Headers show
Series qed/qedf: Firmware recovery, bw update and misc fixes. | expand

Commit Message

Saurav Kashyap April 16, 2020, 8:43 a.m. UTC 
From: Javed Hasan <jhasan@marvell.com>

retry delay timestamp is updated in queuecommand as well
qedf_scsi_completion routine, protect it using lock.

Signed-off-by: Javed Hasan <jhasan@marvell.com>
Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
---
 drivers/scsi/qedf/qedf_io.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/scsi/qedf/qedf_io.c b/drivers/scsi/qedf/qedf_io.c
index e749a2d..64c1769 100644
--- a/drivers/scsi/qedf/qedf_io.c
+++ b/drivers/scsi/qedf/qedf_io.c
@@ -1021,14 +1021,18 @@  int qedf_post_io_req(struct qedf_rport *fcport, struct qedf_ioreq *io_req)
 	atomic_inc(&fcport->ios_to_queue);
 
 	if (fcport->retry_delay_timestamp) {
+		/* Take fcport->rport_lock for resetting the delay_timestamp */
+		spin_lock_irqsave(&fcport->rport_lock, flags);
 		if (time_after(jiffies, fcport->retry_delay_timestamp)) {
 			fcport->retry_delay_timestamp = 0;
 		} else {
+			spin_unlock_irqrestore(&fcport->rport_lock, flags);
 			/* If retry_delay timer is active, flow off the ML */
 			rc = SCSI_MLQUEUE_TARGET_BUSY;
 			atomic_dec(&fcport->ios_to_queue);
 			goto exit_qcmd;
 		}
+		spin_unlock_irqrestore(&fcport->rport_lock, flags);
 	}
 
 	io_req = qedf_alloc_cmd(fcport, QEDF_SCSI_CMD);