hwmon: (w83627hf) Use request_muxed_region for Super-IO accesses

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Super-IO accesses may fail on a system with no or unmapped LPC bus.

Also, other drivers may attempt to access the LPC bus at the same time,
resulting in undefined behavior.

Use request_muxed_region() to ensure that IO access on the requested
address space is supported, and to ensure that access by multiple drivers
is synchronized.

Fixes: b72656dbc4 ("hwmon: (w83627hf) Stop using globals for I/O port numbers")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

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This commit is contained in:

Guenter Roeck 2019-04-05 08:44:41 -07:00

parent d6410408ad

commit e95fd518d0

1 changed files with 37 additions and 5 deletions

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drivers/hwmon/w83627hf.c

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