diff options
Diffstat (limited to 'drivers/usb/misc/adutux.c')
| -rw-r--r-- | drivers/usb/misc/adutux.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/misc/adutux.c b/drivers/usb/misc/adutux.c index 306e97825b3..ac8ad91c2da 100644 --- a/drivers/usb/misc/adutux.c +++ b/drivers/usb/misc/adutux.c @@ -25,6 +25,7 @@ #include <linux/module.h> #include <linux/usb.h> #include <linux/mutex.h> +#include <linux/smp_lock.h> #include <asm/uaccess.h> #ifdef CONFIG_USB_DEBUG @@ -274,6 +275,7 @@ static int adu_open(struct inode *inode, struct file *file) dbg(2,"%s : enter", __func__); + lock_kernel(); subminor = iminor(inode); if ((retval = mutex_lock_interruptible(&adutux_mutex))) { @@ -332,6 +334,7 @@ static int adu_open(struct inode *inode, struct file *file) exit_no_device: mutex_unlock(&adutux_mutex); exit_no_lock: + unlock_kernel(); dbg(2,"%s : leave, return value %d ", __func__, retval); return retval; } |