linux-kernel - [PATCH AUTOSEL 5.15 02/21] scsi: qedf: Don't process stag work during unload and recovery

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Date: Mon, 17 Jun 2024 09:25:39 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Saurav Kashyap <skashyap@...vell.com>,
	Nilesh Javali <njavali@...vell.com>,
	"Martin K . Petersen" <martin.petersen@...cle.com>,
	Sasha Levin <sashal@...nel.org>,
	jhasan@...vell.com,
	GR-QLogic-Storage-Upstream@...vell.com,
	James.Bottomley@...senPartnership.com,
	linux-scsi@...r.kernel.org
Subject: [PATCH AUTOSEL 5.15 02/21] scsi: qedf: Don't process stag work during unload and recovery

From: Saurav Kashyap <skashyap@...vell.com>

[ Upstream commit 51071f0831ea975fc045526dd7e17efe669dc6e1 ]

Stag work can cause issues during unload and recovery, hence don't process
it.

Signed-off-by: Saurav Kashyap <skashyap@...vell.com>
Signed-off-by: Nilesh Javali <njavali@...vell.com>
Link: https://lore.kernel.org/r/20240515091101.18754-2-skashyap@marvell.com
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/scsi/qedf/qedf_main.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/scsi/qedf/qedf_main.c b/drivers/scsi/qedf/qedf_main.c
index 18380a932ab61..ab43e15fa8f36 100644
--- a/drivers/scsi/qedf/qedf_main.c
+++ b/drivers/scsi/qedf/qedf_main.c
@@ -4001,6 +4001,22 @@ void qedf_stag_change_work(struct work_struct *work)
 	struct qedf_ctx *qedf =
 	    container_of(work, struct qedf_ctx, stag_work.work);
 
+	if (!qedf) {
+		QEDF_ERR(&qedf->dbg_ctx, "qedf is NULL");
+		return;
+	}
+
+	if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) {
+		QEDF_ERR(&qedf->dbg_ctx,
+			 "Already is in recovery, hence not calling software context reset.\n");
+		return;
+	}
+
+	if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
+		QEDF_ERR(&qedf->dbg_ctx, "Driver unloading\n");
+		return;
+	}
+
 	printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset.",
 			dev_name(&qedf->pdev->dev), __func__, __LINE__,
 			qedf->dbg_ctx.host_no);
-- 
2.43.0