diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-09-09 23:51:02 +0100 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-09-13 20:29:11 +1000 |
| commit | 7b334fcb45b757ffb093696ca3de1b0c8b4a33f1 (patch) | |
| tree | fe56259639b9f1c993d742e27468087c46e51f05 /drivers/gpu/drm/i915/intel_dp.c | |
| parent | 27849044ca6ff9c52f63271b511282acf6d1c251 (diff) | |
drm: Use a nondestructive mode for output detect when polling
Destructive load-detection is very expensive and due to failings
elsewhere can trigger system wide stalls of up to 600ms. A simple
first step to correcting this is not to invoke such an expensive
and destructive load-detection operation automatically.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=29536
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=16265
Reported-by: Bruno Prémont <bonbons@linux-vserver.org>
Tested-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 51d142939a26..e1a2a05fb838 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1386,7 +1386,8 @@ ironlake_dp_detect(struct drm_connector *connector) * \return false if DP port is disconnected. */ static enum drm_connector_status -intel_dp_detect(struct drm_connector *connector) +intel_dp_detect(struct drm_connector *connector, + bool nondestructive) { struct drm_encoder *encoder = intel_attached_encoder(connector); struct intel_dp *intel_dp = enc_to_intel_dp(encoder); |