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drm/i915: provide more error output when mode sets fail

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If a mode set fails we may get a message from drm_crtc_helper if we're lucky,
but it won't tell us anything about *why* we failed to set a mode.  So
add a few DRM_ERRORs for the cases that shouldn't happen so we can debug
things more easily.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Jesse Barnes 2011-07-19 15:38:56 -07:00 committed by Keith Packard
parent 358733e904
commit 013a41ec54
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/i915/intel_display.c
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@ -1958,7 +1958,7 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
/* no fb bound */
if (!crtc->fb) {
DRM_DEBUG_KMS("No FB bound\n");
DRM_ERROR("No FB bound\n");
return 0;
}
@ -1967,6 +1967,7 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
case 1:
break;
default:
DRM_ERROR("no plane for crtc\n");
return -EINVAL;
}
@ -1976,6 +1977,7 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
NULL);
if (ret != 0) {
mutex_unlock(&dev->struct_mutex);
DRM_ERROR("pin & fence failed\n");
return ret;
}
@ -2004,6 +2006,7 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
if (ret) {
i915_gem_object_unpin(to_intel_framebuffer(crtc->fb)->obj);
mutex_unlock(&dev->struct_mutex);
DRM_ERROR("failed to update base address\n");
return ret;
}