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drm/i915: Print the pipe on which the vblank wait times out 

Improve the debug message that tells us we've been waiting for a vblank
that never arrived. Printing the pipe could lead a "doh!" moment where
we've been waiting for a vblank on a pipe that was off for instance.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Thomas Wood <thomas.wood@intel.com>
[danvet: Polish commit message a bit.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Damien Lespiau 2014-08-18 13:51:00 +01:00 committed by Daniel Vetter
parent 055e393fa3
commit 31e4b89acb
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/i915/intel_display.c
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@ -900,7 +900,8 @@ static void g4x_wait_for_vblank(struct drm_device *dev, int pipe)
frame = I915_READ(frame_reg);
if (wait_for(I915_READ_NOTRACE(frame_reg) != frame, 50))
WARN(1, "vblank wait timed out\n");
WARN(1, "vblank wait on pipe %c timed out\n",
pipe_name(pipe));
}
/**
@ -941,7 +942,8 @@ void intel_wait_for_vblank(struct drm_device *dev, int pipe)
if (wait_for(I915_READ(pipestat_reg) &
PIPE_VBLANK_INTERRUPT_STATUS,
50))
DRM_DEBUG_KMS("vblank wait timed out\n");
DRM_DEBUG_KMS("vblank wait on pipe %c timed out\n",
pipe_name(pipe));
}
static bool pipe_dsl_stopped(struct drm_device *dev, enum pipe pipe)