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scsi: qedf: Check for module unloading bit before processing link update AEN 

Prevent race where we're removing the module and we get link update

Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Saurav Kashyap 2019-08-23 02:52:40 -07:00 committed by Martin K. Petersen
parent b29a907f10
commit 0482262646
1 changed files with 10 additions and 0 deletions
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10
drivers/scsi/qedf/qedf_main.c
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@ -533,6 +533,16 @@ static void qedf_link_update(void *dev, struct qed_link_output *link)
{
struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
/*
* Prevent race where we're removing the module and we get link update
* for qed.
*/
if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
QEDF_ERR(&qedf->dbg_ctx,
"Ignore link update, driver getting unload.\n");
return;
}
if (link->link_up) {
if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC,