1 files changed, 5 insertions, 0 deletions

diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c
index 54e2eb56e4c2..f50ebf20df96 100644
--- a/sound/core/oss/mixer_oss.c
+++ b/sound/core/oss/mixer_oss.c
@@ -43,6 +43,10 @@ static int snd_mixer_oss_open(struct inode *inode, struct file *file)
         struct snd_mixer_oss_file *fmixer;
         int err;
 
+        err = nonseekable_open(inode, file);
+        if (err < 0)
+                return err;
+
         card = snd_lookup_oss_minor_data(iminor(inode),
                                          SNDRV_OSS_DEVICE_TYPE_MIXER);
         if (card == NULL)
@@ -397,6 +401,7 @@ static const struct file_operations snd_mixer_oss_f_ops =
         .owner =        THIS_MODULE,
         .open =         snd_mixer_oss_open,
         .release =      snd_mixer_oss_release,
+        .llseek =       no_llseek,
         .unlocked_ioctl =       snd_mixer_oss_ioctl,
         .compat_ioctl = snd_mixer_oss_ioctl_compat,
 };