diff options
Diffstat (limited to 'drivers/usb/misc/ldusb.c')
| -rw-r--r-- | drivers/usb/misc/ldusb.c | 12 |
1 files changed, 2 insertions, 10 deletions
diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c index 8de32df5978..7c0bd13eccb 100644 --- a/drivers/usb/misc/ldusb.c +++ b/drivers/usb/misc/ldusb.c @@ -33,7 +33,6 @@ #include <linux/slab.h> #include <linux/module.h> #include <linux/mutex.h> -#include <linux/smp_lock.h> #include <asm/uaccess.h> #include <linux/input.h> @@ -297,14 +296,12 @@ static int ld_usb_open(struct inode *inode, struct file *file) int retval; struct usb_interface *interface; - lock_kernel(); nonseekable_open(inode, file); subminor = iminor(inode); interface = usb_find_interface(&ld_usb_driver, subminor); if (!interface) { - unlock_kernel(); err("%s - error, can't find device for minor %d\n", __func__, subminor); return -ENODEV; @@ -312,16 +309,12 @@ static int ld_usb_open(struct inode *inode, struct file *file) dev = usb_get_intfdata(interface); - if (!dev) { - unlock_kernel(); + if (!dev) return -ENODEV; - } /* lock this device */ - if (mutex_lock_interruptible(&dev->mutex)) { - unlock_kernel(); + if (mutex_lock_interruptible(&dev->mutex)) return -ERESTARTSYS; - } /* allow opening only once */ if (dev->open_count) { @@ -360,7 +353,6 @@ static int ld_usb_open(struct inode *inode, struct file *file) unlock_exit: mutex_unlock(&dev->mutex); - unlock_kernel(); return retval; } |