tree 4278449cda6ff20354509657b78fdcc6eb77ee86
parent 53defab7a561973cc3b815b87ce0ddbb9bc3ee18
author Jean Delvare <jdelvare@suse.de> 1523462734 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1524994316 +0200

i2c: i801: Restore configuration at shutdown

commit f7f6d915a10f7f2bce17e3b1b7d3376562395a28 upstream.

On some systems, the BIOS expects certain SMBus register values to
match the hardware defaults. Restore these configuration registers at
shutdown time to avoid confusing the BIOS. This avoids hard-locking
such systems upon reboot.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Tested-by: Jason Andryuk <jandryuk@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>