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drm/crtc-helper: disable_unused_functions really isn't for atomic 

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.

Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1465388359-8070-26-git-send-email-daniel.vetter@ffwll.ch
This commit is contained in:
Daniel Vetter 2016-06-08 14:19:18 +02:00
parent f07df98063
commit 6605ca0f0e
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/drm_crtc_helper.c
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@ -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);