From d7e96feab83d29e27d14c60f1fa7c716ef7880cd Mon Sep 17 00:00:00 2001 From: Adam Jackson Date: Tue, 26 Jul 2011 15:39:46 -0400 Subject: [PATCH] drm/i915/dp: Check for AUXCH error before checking for success This is paranoid, but I am entirely willing to believe the hardware could come up with a condition where I get a status with both the 'done' and 'receive error' bits set. Signed-off-by: Adam Jackson Acked-by: Jesse Barnes Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_dp.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 2f4766385797..8f1148c04108 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -426,6 +426,10 @@ intel_dp_aux_ch(struct intel_dp *intel_dp, DP_AUX_CH_CTL_DONE | DP_AUX_CH_CTL_TIME_OUT_ERROR | DP_AUX_CH_CTL_RECEIVE_ERROR); + + if (status & (DP_AUX_CH_CTL_TIME_OUT_ERROR | + DP_AUX_CH_CTL_RECEIVE_ERROR)) + continue; if (status & DP_AUX_CH_CTL_DONE) break; } -- 2.30.2