Re: [PATCH] drm/imx: imx-ldb: do not try to dereference crtc->state->state in encoder mode_set

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On Fri, Jul 22, 2016 at 12:57:15PM +0200, Philipp Zabel wrote:
> Am Freitag, den 22.07.2016, 11:35 +0200 schrieb Daniel Vetter:
> [...]
> > Proper fix would be to roll out atomic_ versions of all teh encoder
> > callbacks where we additionally pass both the crtc state and the connector
> > state. Then there's no need for walking connector lists like that. And in
> > the atomic helpers those two states are always readily available, and
> > passing them down to callbacks is also what we will do in i915. I'd be
> > happy to merge such a patch.
> 
> Thanks, that is a good idea. Which encoder callbacks besides mode_set ->
> atomic_mode_set are you thinking of, though? enable/disable?

Yes. The only other one is mode_fixup, and we already have atomic_check as
the fancy replacement for that. Please align the parameter ordering with
encoder->atomic_check for consistency.

Also when you do that patch, pls don't forget the vtable kerneldoc
comments, and make sure there's no warnings/issues and it renders nicely
using

$ make htmldocs

Since 4.8 will feature a new sphinx-based toolchain, pls run that command
on top of linux-next (for the latest sphinx fixes from docs-next).
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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