i8k: Force SMM to run on CPU 0

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On Studio 1555 with dual-core CPU, reading sensor attributes
exported by this driver resulted in random failures combined
with system hangups and forced logouts. Information in
drivers/firmware/dcdbas.c suggests that SMM accesses must
run on CPU 0. With this patch, the problems are gone,
suggesting that this is in fact the case.

Code derived from drivers/firmware/dcdbas.c.

Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Guenter Roeck 2013-12-14 09:30:15 -08:00 • committed by Greg Kroah-Hartman

parent 14d3238396

commit f36fdb9f02

1 changed files with 17 additions and 2 deletions

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drivers/char/i8k.c

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