#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>
{
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);
}
(cam->users)++;
mutex_unlock(&cam->s_mutex);
+ unlock_kernel();
return 0;
}