V4L/DVB (8752): s2255drv: firmware improvement patch

[linux-2.6-omap-h63xx.git] / drivers / media / video / cafe_ccic.c

diff --git a/drivers/media/video/cafe_ccic.c b/drivers/media/video/cafe_ccic.c
index c149b7d712e5a703d5f277ebed607aafe6202202..e9994c81df660ebaec7d9b9d10a587d73dfa3910 100644 (file)
--- a/drivers/media/video/cafe_ccic.c
+++ b/drivers/media/video/cafe_ccic.c
@@ -19,6 +19,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/fs.h>
+#include <linux/mm.h>
 #include <linux/pci.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
@@ -1475,9 +1476,12 @@ static int cafe_v4l_open(struct inode *inode, struct file *filp)
 {
        struct cafe_camera *cam;
 
+       lock_kernel();
        cam = cafe_find_dev(iminor(inode));
-       if (cam == NULL)
+       if (cam == NULL) {
+               unlock_kernel();
                return -ENODEV;
+       }
        filp->private_data = cam;
 
        mutex_lock(&cam->s_mutex);
@@ -1489,6 +1493,7 @@ static int cafe_v4l_open(struct inode *inode, struct file *filp)
        }
        (cam->users)++;
        mutex_unlock(&cam->s_mutex);
+       unlock_kernel();
        return 0;
 }