vmscan: count the number of times zone_reclaim() scans and fails

[sfrench/cifs-2.6.git] / sound / core / sound.c

diff --git a/sound/core/sound.c b/sound/core/sound.c
index 44a69bb8d4f018e953cf0de692a9fb681a4a74b0..7872a02f6ca998602b588dc6ba4d7741c3e08c1b 100644 (file)
--- 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) {