Otherwise the new&shiny irq-driven gmbus and dp aux code won't work that well. Noticed since the dp aux code doesn't have an automatic fallback with a timeout (since the hw provides for that already). v2: Simple move drm_irq_install before intel_modeset_gem_init, as suggested by Ben Widawsky. Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch> --- drivers/gpu/drm/i915/i915_dma.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 2c09900..068b49b 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1325,12 +1325,14 @@ static int i915_load_modeset_init(struct drm_device *dev) if (ret) goto cleanup_gem_stolen; - intel_modeset_gem_init(dev); - ret = drm_irq_install(dev); if (ret) goto cleanup_gem; + /* Important: The output setup functions called by modeset_gem_init need + * working irqs for e.g. gmbus transfers. */ + intel_modeset_gem_init(dev); + /* Always safe in the mode setting case. */ /* FIXME: do pre/post-mode set stuff in core KMS code */ dev->vblank_disable_allowed = 1; -- 1.7.11.2
