[PATCH 26/27] drm/crtc-helper: disable_unused_functions really isn't for atomic

[Laurent Pinchart]

Hi Daniel,

On Thursday 09 Jun 2016 10:26:44 Daniel Vetter wrote:
> On Thu, Jun 09, 2016 at 01:36:30AM +0300, Laurent Pinchart wrote:
> > On Wednesday 08 Jun 2016 14:19:18 Daniel Vetter wrote:
> >> Rockchip just blew up here on testing, because I removed some "is this
> >> crtc already disabled/enabled" state tracking from callbacks (not needed
> >> with atomic). Turns out that was needed to work around rockchip still
> >> calling legacy helper code.
> >> 
> >> Since me explaining on irc/mailing-list plus kerneldoc isn't enough,
> >> be more verbose and add dmesg output. Not that anyone actually reads
> >> that,
> >> either.
> > 
> > How about also removing it from atomic drivers then ? At least omapdrm
> > calls this function.
> 
> I tried, and thought I caught them all. See preceeding sti patch. Not sure
> why I missed it, will remedy.

With the call removed from drivers,

Acked-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>

> >> Cc: Tomeu Vizoso <tomeu.vizoso at collabora.com>
> >> Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> >> ---
> >> 
> >>  drivers/gpu/drm/drm_crtc_helper.c | 3 +++
> >>  1 file changed, 3 insertions(+)
> >> 
> >> diff --git a/drivers/gpu/drm/drm_crtc_helper.c
> >> b/drivers/gpu/drm/drm_crtc_helper.c index a6e42433ef0e..b47ec24939a0
> >> 100644
> >> --- a/drivers/gpu/drm/drm_crtc_helper.c
> >> +++ b/drivers/gpu/drm/drm_crtc_helper.c
> >> @@ -232,6 +232,9 @@ static void
> >> __drm_helper_disable_unused_functions(struct drm_device *dev) */
> >> 
> >>  void drm_helper_disable_unused_functions(struct drm_device *dev)
> >>  {
> >> +	if (drm_core_check_feature(dev, DRIVER_ATOMIC))
> >> +		DRM_ERROR("Called for atomic driver, this is not what you
> >> want.\n");
> >> +
> >>  	drm_modeset_lock_all(dev);
> >>  	__drm_helper_disable_unused_functions(dev);
> >>  	drm_modeset_unlock_all(dev);

-- 
Regards,

Laurent Pinchart