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USB: kill BKL in usblcd

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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:
Oliver Neukum 2007-03-05 15:11:14 +01:00 committed by Greg Kroah-Hartman
parent 5d9b89b33f
commit 2e85c91e2e
1 changed files with 5 additions and 2 deletions
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7
drivers/usb/misc/usblcd.c
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@ -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);