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| author | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2015-07-13 16:30:32 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-07-15 15:06:02 +0200 |
| commit | 8f539a83efa7dceb7c2257ca96e2dfc846bd12f6 (patch) | |
| tree | 6d85239f6ee2500c788210520995942e91cc9197 /drivers/gpu/drm/i915/intel_sprite.c | |
| parent | 342defd8646dff96f87cf44c4eee4dfdf0dd8d00 (diff) | |
| download | op-kernel-dev-8f539a83efa7dceb7c2257ca96e2dfc846bd12f6.zip op-kernel-dev-8f539a83efa7dceb7c2257ca96e2dfc846bd12f6.tar.gz | |
drm/i915: always disable irqs in intel_pipe_update_start
This can only fail because of a bug in the code.
Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
[danvet: Squash in follow-up to also remove start_vbl_count from
intel_crtc->atomic and put it into the intel_crtc directly - it's not
precomputed state.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_sprite.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_sprite.c | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c index cd21525d..9d8af2f 100644 --- a/drivers/gpu/drm/i915/intel_sprite.c +++ b/drivers/gpu/drm/i915/intel_sprite.c @@ -75,10 +75,8 @@ static int usecs_to_scanlines(const struct drm_display_mode *mode, int usecs) * until a subsequent call to intel_pipe_update_end(). That is done to * avoid random delays. The value written to @start_vbl_count should be * supplied to intel_pipe_update_end() for error checking. - * - * Return: true if the call was successful */ -bool intel_pipe_update_start(struct intel_crtc *crtc, uint32_t *start_vbl_count) +void intel_pipe_update_start(struct intel_crtc *crtc, uint32_t *start_vbl_count) { struct drm_device *dev = crtc->base.dev; const struct drm_display_mode *mode = &crtc->config->base.adjusted_mode; @@ -96,13 +94,14 @@ bool intel_pipe_update_start(struct intel_crtc *crtc, uint32_t *start_vbl_count) min = vblank_start - usecs_to_scanlines(mode, 100); max = vblank_start - 1; + local_irq_disable(); + *start_vbl_count = 0; + if (min <= 0 || max <= 0) - return false; + return; if (WARN_ON(drm_crtc_vblank_get(&crtc->base))) - return false; - - local_irq_disable(); + return; trace_i915_pipe_update_start(crtc, min, max); @@ -138,8 +137,6 @@ bool intel_pipe_update_start(struct intel_crtc *crtc, uint32_t *start_vbl_count) *start_vbl_count = dev->driver->get_vblank_counter(dev, pipe); trace_i915_pipe_update_vblank_evaded(crtc, min, max, *start_vbl_count); - - return true; } /** @@ -161,7 +158,7 @@ void intel_pipe_update_end(struct intel_crtc *crtc, u32 start_vbl_count) local_irq_enable(); - if (start_vbl_count != end_vbl_count) + if (start_vbl_count && start_vbl_count != end_vbl_count) DRM_ERROR("Atomic update failure on pipe %c (start=%u end=%u)\n", pipe_name(pipe), start_vbl_count, end_vbl_count); } |
