Re: [PATCH] platform driver:fix incorrect use of 'platform_bus_type' with 'struct device_driver'

[David Brownell <david-b@pacbell.net>]

On Friday 06 February 2009, tom.leiming@gmail.com wrote:
> From: Ming Lei <tom.leiming@gmail.com>
> 
> This patch fixes the bug reported in
>         http://bugzilla.kernel.org/show_bug.cgi?id=11681.
> 
> "Lots of device drivers register a 'struct device_driver' with
> the '.bus' member set to '&platform_bus_type'. This is wrong,
> since the platform_bus functions expect the 'struct device_driver'
> to be wrapped up in a 'struct platform_driver' which provides
> some additional callbacks (like suspend_late, resume_early).
> The effect may be that platform_suspend_late() uses bogus data
> outside the device_driver struct as a pointer pointer to the
> device driver's suspend_late() function or other hard to
> reproduce failures."(Lothar Wassmann)
> 
> Signed-off-by: Ming Lei <tom.leiming@gmail.com>

I just glanced at this ... but those parts looked like
good fixes to this family of bugs.  Thanks.

- Dave