Use f_lock to protect f_flags

[linux-flexiantxendom0-natty.git] / sound / oss / au1550_ac97.c

diff --git a/sound/oss/au1550_ac97.c b/sound/oss/au1550_ac97.c
index 81e1f44..4191acc 100644 (file)
--- a/sound/oss/au1550_ac97.c
+++ b/sound/oss/au1550_ac97.c
@@ -1627,7 +1627,9 @@ au1550_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
                                    sizeof(abinfo)) ? -EFAULT : 0;
 
        case SNDCTL_DSP_NONBLOCK:
+               spin_lock(&file->f_lock);
                file->f_flags |= O_NONBLOCK;
+               spin_unlock(&file->f_lock);
                return 0;
 
        case SNDCTL_DSP_GETODELAY: