USB: g_printer: fix bug in unregistration
commit 8582d86143c690c68cc42f996def466a035bee34 upstream.
The allocated chardevice region range is only 1 device but on
unregister it currently tries to deregister 2.
Found this while doing a insmod/rmmod/insmod/rm... of the module
which seemed to eat major numbers.
Signed-off-by: Fabian Godehardt <fg@emlix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/gadget/printer.c b/drivers/usb/gadget/printer.c
index 271ef94..88a464c 100644
--- a/drivers/usb/gadget/printer.c
+++ b/drivers/usb/gadget/printer.c
@@ -1602,7 +1602,7 @@
if (status)
ERROR(dev, "usb_gadget_unregister_driver %x\n", status);
- unregister_chrdev_region(g_printer_devno, 2);
+ unregister_chrdev_region(g_printer_devno, 1);
class_destroy(usb_gadget_class);
mutex_unlock(&usb_printer_gadget.lock_printer_io);
}