[Intel-gfx] [PATCH 2/3] drm/i915/tv: Only poll for TV connections

[Chris Wilson]

From: Mathew McKernan <matmckernan at rauland.com.au>

As a probe for a TV connection modifies the TV_CTL register, it causes a
loss of sync and a regular glitch on the output. This is highly
undesirable when using the TV, so only poll for TV connections and wait
for an explicit query for detecting the disconnection event.

Reported-by: Mathew McKernan <matmckernan at rauland.com.au>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=35977
Signed-off-by: Mathew McKernan <matmckernan at rauland.com.au>
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/intel_tv.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index 84a733b..abd5444 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1650,8 +1650,7 @@ intel_tv_init(struct drm_device *dev)
 	 *
 	 * More recent chipsets favour HDMI rather than integrated S-Video.
 	 */
-	connector->polled =
-		DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
+	connector->polled = DRM_CONNECTOR_POLL_CONNECT;
 
 	drm_connector_init(dev, connector, &intel_tv_connector_funcs,
 			   DRM_MODE_CONNECTOR_SVIDEO);
-- 
1.7.4.1