X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Fvfio%2Fvfio.c;h=6d78736563de748c319ade5c0ff5cf210028fc23;hb=6fe70bb73ef2fa814d88220c38f2ca07342aea75;hp=acb7121a9316dd146a7cec60af798ecbe42b7681;hpb=72de4c63e5ebe8e4054ea800d7a8d4b3f033caf2;p=firefly-linux-kernel-4.4.55.git

diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index acb7121a9316..6d78736563de 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -1360,7 +1360,7 @@ static const struct file_operations vfio_device_fops = {
  */
 static char *vfio_devnode(struct device *dev, umode_t *mode)
 {
-	if (MINOR(dev->devt) == 0)
+	if (mode && (MINOR(dev->devt) == 0))
 		*mode = S_IRUGO | S_IWUGO;
 
 	return kasprintf(GFP_KERNEL, "vfio/%s", dev_name(dev));