From: Akinobu Mita <akinobu.mita@gmail.com>

unregister_capi_driver() needs to be called in module cleanup.
(It fixes data corruption by reloading t1isa driver)

Cc: Kai Germaschewski <kai.germaschewski@gmx.de>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 drivers/isdn/hardware/avm/t1isa.c |    1 +
 1 file changed, 1 insertion(+)

diff -puN drivers/isdn/hardware/avm/t1isa.c~isdn-fix-missing-unregister_capi_driver drivers/isdn/hardware/avm/t1isa.c
--- a/drivers/isdn/hardware/avm/t1isa.c~isdn-fix-missing-unregister_capi_driver
+++ a/drivers/isdn/hardware/avm/t1isa.c
@@ -584,6 +584,7 @@ static void __exit t1isa_exit(void)
 {
 	int i;
 
+	unregister_capi_driver(&capi_driver_t1isa);
 	for (i = 0; i < MAX_CARDS; i++) {
 		if (!io[i])
 			break;
_