[Intel-gfx] [PATCH] drm/i915/dp: Don't invalidate intel_dp_detect result

[Puthikorn Voravootivat]

If the full detect is already done, we shouldn't need to do it
again.

This fixes the screen blinking issue that happen when calling
DRM_IOCTL_MODE_GETCONNECTOR while PSR is active. The blinking
is caused by full dp detect in intel_dp_long_pulse().

Signed-off-by: Puthikorn Voravootivat <puthik at chromium.org>
---
 drivers/gpu/drm/i915/intel_dp.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index d3e5fdf0d2fa..152e7016d5f2 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -4834,8 +4834,6 @@ intel_dp_detect(struct drm_connector *connector,
 	if (!intel_dp->detect_done)
 		status = intel_dp_long_pulse(intel_dp->attached_connector);
 
-	intel_dp->detect_done = false;
-
 	return status;
 }
 
-- 
2.14.1.342.g6490525c54-goog