i2c: i801: Restore configuration at shutdown

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commit f7f6d915a1 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>

...

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Jean Delvare 2018-04-11 18:05:34 +02:00 • committed by Greg Kroah-Hartman

parent 44ff2389a8

commit fd5cc02cbe

1 changed files with 10 additions and 0 deletions

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drivers/i2c/busses/i2c-i801.c

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