1 files changed, 4 insertions, 0 deletions

diff --git a/sound/core/sound.c b/sound/core/sound.c
index 44a69bb8d4f0..7872a02f6ca9 100644
--- a/sound/core/sound.c
+++ b/sound/core/sound.c
@@ -152,6 +152,10 @@ static int __snd_open(struct inode *inode, struct file *file)
         }
         old_fops = file->f_op;
         file->f_op = fops_get(mptr->f_ops);
+        if (file->f_op == NULL) {
+                file->f_op = old_fops;
+                return -ENODEV;
+        }
         if (file->f_op->open)
                 err = file->f_op->open(inode, file);
         if (err) {