[SCSI] scsi_dh: Check for sdev state in store_dh_state()

Avoid attaching a hardware handler to a device which is already scheduled for deletion. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
git-mirror · Aug 30, 2011 · 6bc8d2a · 6bc8d2a
1 parent 46ccf6b
commit 6bc8d2a
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/drivers/scsi/device_handler/scsi_dh.c b/drivers/scsi/device_handler/scsi_dh.c
@@ -190,6 +190,10 @@ store_dh_state(struct device *dev, struct device_attribute *attr,
 	struct scsi_device_handler *scsi_dh;
 	int err = -EINVAL;
 
+	if (sdev->sdev_state == SDEV_CANCEL ||
+	    sdev->sdev_state == SDEV_DEL)
+		return -ENODEV;
+
 	if (!sdev->scsi_dh_data) {
 		/*
 		 * Attach to a device handler