Re: [PATCH 1/2] parport_pc: after superio probing restore originalregister values

[Jeff Garzik]

Alan Cox wrote:
> From: Jens Rottmann <JRottmann@xxxxxxxxxxxxxxxxxx>
>
> CONFIG_PARPORT_PC_SUPERIO probes for various superio chips by writing
> byte sequences to a set of different potential I/O ranges.  But the
> probed ranges are not exclusive to parallel ports.  Some of our boards
> just happen to have a watchdog in one of them.  Took us almost a week
> to figure out why some distros reboot without warning after running
> flawlessly for 3 hours.  For exactly 170 = 0xAA minutes, that is ...
>
> Fixed by restoring original values after probing.  Also fixed too small
> request_region() in detect_and_report_it87().
>
> Signed-off-by: Jens Rottmann <JRottmann@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Alan Cox <alan@xxxxxxxxxxxxxxx>
> Cc: <stable@xxxxxxxxxx>
> ---
>
>  drivers/parport/parport_pc.c |   31 +++++++++++++++++++++++++------
>  1 files changed, 25 insertions(+), 6 deletions(-)

Acked-by: Jeff Garzik <jgarzik@xxxxxxxxxx>


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