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Subject[PATCH] drm/i915/tv: After disabling the pipe, use wait_for_vblank_off()
Date
Hopefully this is a contributing factor to the spurious TV detection
repoted by Ivan Bulatovic and others.

References:

Bug 16871 - "TV1 connected" with no tv
https://bugzilla.kernel.org/show_bug.cgi?id=16871

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reported-by: Ivan Bulatovic <combuster@gmx.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
---
drivers/gpu/drm/i915/intel_tv.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index f70bc76..f96289d 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1171,7 +1171,7 @@ intel_tv_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
I915_WRITE(pipeconf_reg, pipeconf & ~PIPEACONF_ENABLE);
POSTING_READ(pipeconf_reg);
/* Wait for vblank for the disable to take effect. */
- intel_wait_for_vblank(dev, intel_crtc->pipe);
+ intel_wait_for_vblank_off(dev, intel_crtc->pipe);

/* Filter ctl must be set before TV_WIN_SIZE */
I915_WRITE(TV_FILTER_CTL_1, TV_AUTO_SCALE);
--
1.7.1


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