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drm: Improve debug output for drm_wait_one_vblank

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This replicates what we've done in i915 in

commit 31e4b89acbd7b19c9a8557e6e660a583a0b97daa
Author: Damien Lespiau <damien.lespiau@intel.com>
Date:   Mon Aug 18 13:51:00 2014 +0100

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

to make sure that when we switch i915 to drm_wait_one_vblank that the
debug output doesn't regress.

Cc: Damien Lespiau <damien.lespiau@intel.com>
Cc: Thomas Wood <thomas.wood@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
This commit is contained in:
Daniel Vetter 2014-09-15 14:04:28 +02:00
parent f2b50c1161
commit 80c873b6b7
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/drm_irq.c
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@ -1077,7 +1077,7 @@ void drm_wait_one_vblank(struct drm_device *dev, int crtc)
u32 last;
ret = drm_vblank_get(dev, crtc);
if (WARN_ON(ret))
if (WARN(ret, "vblank not available on crtc %i, ret=%i\n", crtc, ret))
return;
last = drm_vblank_count(dev, crtc);
@ -1086,7 +1086,7 @@ void drm_wait_one_vblank(struct drm_device *dev, int crtc)
last != drm_vblank_count(dev, crtc),
msecs_to_jiffies(100));
WARN_ON(ret == 0);
WARN(ret == 0, "vblank wait timed out on crtc %i\n", crtc);
drm_vblank_put(dev, crtc);
}