docs: driver-api: bt8xxgpio: Revive dead link

www.bu3sch.de has been unusable for several years, but the same
information is available on bues.ch.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Link: https://lore.kernel.org/r/20191004164059.10397-2-j.neuschaefer@gmx.net
Acked-by: Michael Büsch <m@bues.ch>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/Documentation/driver-api/gpio/bt8xxgpio.rst b/Documentation/driver-api/gpio/bt8xxgpio.rst
index a845feb074de7486efc855f76b53b51e2de8a3d5..d7e75f1234e7468312dc1abc0a5e32bfba75c323 100644 (file)
--- a/Documentation/driver-api/gpio/bt8xxgpio.rst
+++ b/Documentation/driver-api/gpio/bt8xxgpio.rst
@@ -2,7 +2,7 @@
 A driver for a selfmade cheap BT8xx based PCI GPIO-card (bt8xxgpio)
 ===================================================================
 
-For advanced documentation, see http://www.bu3sch.de/btgpio.php
+For advanced documentation, see https://bues.ch/cms/unmaintained/btgpio.html
 
 A generic digital 24-port PCI GPIO card can be built out of an ordinary
 Brooktree bt848, bt849, bt878 or bt879 based analog TV tuner card. The