Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 04eada25 authored by Jani Nikula's avatar Jani Nikula Committed by Daniel Vetter
Browse files

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: default avatarJani Nikula <jani.nikula@intel.com>
Cc: stable@vger.kernel.org (on Jani's request)
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent f66fab8e

drivers/gpu/drm/i915/intel_dp.c

+2 −2
Original line number Diff line number Diff line
@@ -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;

	}