sound: cdev lock_kernel() pushdown

Signed-off-by: Jonathan Corbet <corbet@lwn.net>

1 files changed, 14 insertions, 1 deletions

diff --git a/sound/core/sound.c b/sound/core/sound.c
index 812f91b3de5b..65b66fa6f97e 100644
--- a/sound/core/sound.c
+++ b/sound/core/sound.c
@@ -21,6 +21,7 @@
 
 #include <linux/init.h>
 #include <linux/slab.h>
+#include <linux/smp_lock.h>
 #include <linux/time.h>
 #include <linux/device.h>
 #include <linux/moduleparam.h>
@@ -121,7 +122,7 @@ void *snd_lookup_minor_data(unsigned int minor, int type)
 
 EXPORT_SYMBOL(snd_lookup_minor_data);
 
-static int snd_open(struct inode *inode, struct file *file)
+static int __snd_open(struct inode *inode, struct file *file)
 {
         unsigned int minor = iminor(inode);
         struct snd_minor *mptr = NULL;
@@ -163,6 +164,18 @@ static int snd_open(struct inode *inode, struct file *file)
         return err;
 }
 
+
+/* BKL pushdown: nasty #ifdef avoidance wrapper */
+static int snd_open(struct inode *inode, struct file *file)
+{
+        int ret;
+
+        lock_kernel();
+        ret = __snd_open(inode, file);
+        unlock_kernel();
+        return ret;
+}
+
 static const struct file_operations snd_fops =
 {
         .owner =        THIS_MODULE,