| Date | Wed, 09 Nov 2011 13:31:40 -0800 | From | Greg KH <> | Subject | [053/264] USB: g_printer: fix bug in unregistration |
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3.1-stable review patch. If anyone has any objections, please let me know.
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From: Fabian Godehardt <fg@emlix.com>
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>
--- drivers/usb/gadget/printer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/gadget/printer.c +++ b/drivers/usb/gadget/printer.c @@ -1611,7 +1611,7 @@ cleanup(void) 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); }
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