hwmon: (it87) Use request_muxed_region

Serialize access to the hardware by using "request_muxed_region" macro
defined by Alan Cox. Call to this macro will hold off the requestor if
the resource is currently busy. "superio_enter" will return an error
if call to "request_muxed_region" fails. Rest of the code change is to
ripple an error return from superio_enter to the top level.

Signed-off-by: Nat Gurumoorthy <[email protected]>
Acked-by: Guenter Roeck <[email protected]>
Signed-off-by: Jean Delvare <[email protected]>

0 files changed, 0 insertions, 0 deletions