diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index 07ef3db3d1a1..d093dd187b2f 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -177,7 +177,8 @@ static unsigned int sr_get_events(struct scsi_device *sdev)
 
 	result = scsi_execute_cmd(sdev, cmd, REQ_OP_DRV_IN, buf, sizeof(buf),
 				  SR_TIMEOUT, MAX_RETRIES, &exec_args);
-	if (scsi_sense_valid(&sshdr) && sshdr.sense_key == UNIT_ATTENTION)
+	if (result > 0 && scsi_sense_valid(&sshdr) &&
+	    sshdr.sense_key == UNIT_ATTENTION)
 		return DISK_EVENT_MEDIA_CHANGE;
 
 	if (result || be16_to_cpu(eh->data_len) < sizeof(*med))