1 files changed, 35 insertions, 6 deletions

diff --git a/sound/oss/swarm_cs4297a.c b/sound/oss/swarm_cs4297a.c
index 3136c88eacdf..b15840ad2527 100644
--- a/sound/oss/swarm_cs4297a.c
+++ b/sound/oss/swarm_cs4297a.c
@@ -68,6 +68,7 @@
 #include <linux/delay.h>
 #include <linux/sound.h>
 #include <linux/slab.h>
+#include <linux/smp_lock.h>
 #include <linux/soundcard.h>
 #include <linux/ac97_codec.h>
 #include <linux/pci.h>
@@ -1534,6 +1535,7 @@ static int cs4297a_open_mixdev(struct inode *inode, struct file *file)
         CS_DBGOUT(CS_FUNCTION | CS_OPEN, 4,
                   printk(KERN_INFO "cs4297a: cs4297a_open_mixdev()+\n"));
 
+        lock_kernel();
         list_for_each(entry, &cs4297a_devs)
         {
                 s = list_entry(entry, struct cs4297a_state, list);
@@ -1544,6 +1546,8 @@ static int cs4297a_open_mixdev(struct inode *inode, struct file *file)
         {
                 CS_DBGOUT(CS_FUNCTION | CS_OPEN | CS_ERROR, 2,
                         printk(KERN_INFO "cs4297a: cs4297a_open_mixdev()- -ENODEV\n"));
+
+                unlock_kernel();
                 return -ENODEV;
         }
         VALIDATE_STATE(s);
@@ -1551,6 +1555,7 @@ static int cs4297a_open_mixdev(struct inode *inode, struct file *file)
 
         CS_DBGOUT(CS_FUNCTION | CS_OPEN, 4,
                   printk(KERN_INFO "cs4297a: cs4297a_open_mixdev()- 0\n"));
+        unlock_kernel();
 
         return nonseekable_open(inode, file);
 }
@@ -1566,11 +1571,15 @@ static int cs4297a_release_mixdev(struct inode *inode, struct file *file)
 }
 
 
-static int cs4297a_ioctl_mixdev(struct inode *inode, struct file *file,
+static int cs4297a_ioctl_mixdev(struct file *file,
                                unsigned int cmd, unsigned long arg)
 {
-        return mixer_ioctl((struct cs4297a_state *) file->private_data, cmd,
+        int ret;
+        lock_kernel();
+        ret = mixer_ioctl((struct cs4297a_state *) file->private_data, cmd,
                            arg);
+        unlock_kernel();
+        return ret;
 }
 
 
@@ -1580,7 +1589,7 @@ static int cs4297a_ioctl_mixdev(struct inode *inode, struct file *file,
 static const struct file_operations cs4297a_mixer_fops = {
         .owner          = THIS_MODULE,
         .llseek         = no_llseek,
-        .ioctl          = cs4297a_ioctl_mixdev,
+        .unlocked_ioctl = cs4297a_ioctl_mixdev,
         .open           = cs4297a_open_mixdev,
         .release        = cs4297a_release_mixdev,
 };
@@ -1944,7 +1953,7 @@ static int cs4297a_mmap(struct file *file, struct vm_area_struct *vma)
 }
 
 
-static int cs4297a_ioctl(struct inode *inode, struct file *file,
+static int cs4297a_ioctl(struct file *file,
                         unsigned int cmd, unsigned long arg)
 {
         struct cs4297a_state *s =
@@ -2337,6 +2346,16 @@ static int cs4297a_ioctl(struct inode *inode, struct file *file,
         return mixer_ioctl(s, cmd, arg);
 }
 
+static long cs4297a_unlocked_ioctl(struct file *file, u_int cmd, u_long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = cs4297a_ioctl(file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
 
 static int cs4297a_release(struct inode *inode, struct file *file)
 {
@@ -2369,7 +2388,7 @@ static int cs4297a_release(struct inode *inode, struct file *file)
         return 0;
 }
 
-static int cs4297a_open(struct inode *inode, struct file *file)
+static int cs4297a_locked_open(struct inode *inode, struct file *file)
 {
         int minor = iminor(inode);
         struct cs4297a_state *s=NULL;
@@ -2486,6 +2505,16 @@ static int cs4297a_open(struct inode *inode, struct file *file)
         return nonseekable_open(inode, file);
 }
 
+static int cs4297a_open(struct inode *inode, struct file *file)
+{
+        int ret;
+
+        lock_kernel();
+        ret = cs4297a_open(inode, file);
+        unlock_kernel();
+
+        return ret;
+}
 
 // ******************************************************************************************
 //   Wave (audio) file operations struct.
@@ -2496,7 +2525,7 @@ static const struct file_operations cs4297a_audio_fops = {
         .read           = cs4297a_read,
         .write          = cs4297a_write,
         .poll           = cs4297a_poll,
-        .ioctl          = cs4297a_ioctl,
+        .unlocked_ioctl = cs4297a_unlocked_ioctl,
         .mmap           = cs4297a_mmap,
         .open           = cs4297a_open,
         .release        = cs4297a_release,