[Intel-gfx] [PATCH] drm/i915/guc: Fix doorbell id selection

[Joonas Lahtinen]

On ti, 2017-05-30 at 17:19 -0700, Daniele Ceraolo Spurio wrote:
> 
> On 30/05/17 17:05, Michel Thierry wrote:
> > 
> > We are passing parameters in the wrong order to find next zero bit, and
> > when it doesn't find anything it returns size (offset in the code), which
> > is always zero.
> > 
> > For reference the function is defined as:
> > find_next_bit( *addr, size, offset )
> > 
> > The incorrect parameter order was added by commit abddffdf3620e
> > ("drm/i915/guc: Sanitize GuC client initialization"). Luckily, currently
> > we only use a single guc client and a single doorbell, which happens to be
> > zero; therefore it isn't necessary to backport this fix (which would be for
> > v4.12).

Whoops, a good catch.

Regards, Joonas
-- 
Joonas Lahtinen
Open Source Technology Center
Intel Corporation