From 28d6c0ba38968f5dcdcab5d861fc89eee20bf33f Mon Sep 17 00:00:00 2001 From: Zhenyu Wang Date: Wed, 11 Nov 2009 02:30:50 +0000 Subject: [PATCH] drm/i915: Fix CRT hotplug detect by checking really no channels attached commit 8e9e0eea9955bffbe5e5cd6355157cabddc31f17 upstream. For CRT hotplug detect status, we have four test results as blue channel only, green channel only, both blue and green channel, and no channel attached. Origin code only marks both blue and green channel case as connected, but ignore other possible connected states. This one trys to detect CRT by checking no channel attached case instead. Signed-off-by: Zhenyu Wang Signed-off-by: Eric Anholt Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/i915/intel_crt.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c index 5ae4c1a8847c..046027fa9731 100644 --- a/drivers/gpu/drm/i915/intel_crt.c +++ b/drivers/gpu/drm/i915/intel_crt.c @@ -234,8 +234,8 @@ static bool intel_crt_detect_hotplug(struct drm_connector *connector) } while (time_after(timeout, jiffies)); } - if ((I915_READ(PORT_HOTPLUG_STAT) & CRT_HOTPLUG_MONITOR_MASK) == - CRT_HOTPLUG_MONITOR_COLOR) + if ((I915_READ(PORT_HOTPLUG_STAT) & CRT_HOTPLUG_MONITOR_MASK) != + CRT_HOTPLUG_MONITOR_NONE) return true; return false; -- 2.39.5