USB: kill BKL in usblcd
this patch removes usage of BKL from usblcd, which got it from the old skeleton driver. Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Родитель
5d9b89b33f
Коммит
2e85c91e2e
|
@ -47,6 +47,7 @@ struct usb_lcd {
|
|||
#define to_lcd_dev(d) container_of(d, struct usb_lcd, kref)
|
||||
|
||||
static struct usb_driver lcd_driver;
|
||||
static DEFINE_MUTEX(usb_lcd_open_mutex);
|
||||
|
||||
|
||||
static void lcd_delete(struct kref *kref)
|
||||
|
@ -68,6 +69,7 @@ static int lcd_open(struct inode *inode, struct file *file)
|
|||
|
||||
subminor = iminor(inode);
|
||||
|
||||
mutex_lock(&usb_lcd_open_mutex);
|
||||
interface = usb_find_interface(&lcd_driver, subminor);
|
||||
if (!interface) {
|
||||
err ("USBLCD: %s - error, can't find device for minor %d",
|
||||
|
@ -89,6 +91,7 @@ static int lcd_open(struct inode *inode, struct file *file)
|
|||
file->private_data = dev;
|
||||
|
||||
exit:
|
||||
mutex_unlock(&usb_lcd_open_mutex);
|
||||
return retval;
|
||||
}
|
||||
|
||||
|
@ -347,7 +350,7 @@ static void lcd_disconnect(struct usb_interface *interface)
|
|||
int minor = interface->minor;
|
||||
|
||||
/* prevent skel_open() from racing skel_disconnect() */
|
||||
lock_kernel();
|
||||
mutex_lock(&usb_lcd_open_mutex);
|
||||
|
||||
dev = usb_get_intfdata(interface);
|
||||
usb_set_intfdata(interface, NULL);
|
||||
|
@ -355,7 +358,7 @@ static void lcd_disconnect(struct usb_interface *interface)
|
|||
/* give back our minor */
|
||||
usb_deregister_dev(interface, &lcd_class);
|
||||
|
||||
unlock_kernel();
|
||||
mutex_unlock(&usb_lcd_open_mutex);
|
||||
|
||||
/* decrement our usage count */
|
||||
kref_put(&dev->kref, lcd_delete);
|
||||
|
|
Загрузка…
Ссылка в новой задаче