Re: [PATCH v9 1/2] Use "request_muxed_region" in it87 watchdog drivers

Wim Van Sebroeck
2011-05-20T11:48:43Z

Hi Nat,

> 01 - Changes to it87 watchdog driver to 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.
>
> The use of the above macro makes it possible to get rid of
> spinlocks in it8712f_wdt.c and it87_wdt.c watchdog drivers.
> This also greatly simplifies the implementation of it87_wdt.c driver.
>
> "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 <natg@google.com>

Added to linux-2.6-watchdog-next.

Kind regards,
Wim.