The patch below does not apply to the 3.13-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.
thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 04eada25d1f72efdecd32d702706594f81de65d5 Mon Sep 17 00:00:00 2001 From: Jani Nikula <[email protected]> Date: Tue, 11 Feb 2014 11:52:04 +0200 Subject: [PATCH] drm/i915/dp: increase native aux defer retry timeout Give more slack to sink devices before retrying on native aux defer. AFAICT the 100 us timeout was not based on the DP spec. Signed-off-by: Jani Nikula <[email protected]> Cc: [email protected] (on Jani's request) Signed-off-by: Daniel Vetter <[email protected]> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 2f517b85b3f4..c36960488c89 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -556,7 +556,7 @@ intel_dp_aux_native_write(struct intel_dp *intel_dp, if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_ACK) break; else if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_DEFER) - udelay(100); + usleep_range(400, 500); else return -EIO; } @@ -608,7 +608,7 @@ intel_dp_aux_native_read(struct intel_dp *intel_dp, return ret - 1; } else if ((ack & DP_AUX_NATIVE_REPLY_MASK) == DP_AUX_NATIVE_REPLY_DEFER) - udelay(100); + usleep_range(400, 500); else return -EIO; } -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
