From bda0381e72028708b37695bf7d5b18ec956cf0a2 Mon Sep 17 00:00:00 2001 From: Rodrigo Vivi Date: Mon, 15 Sep 2014 19:24:03 -0400 Subject: [PATCH] drm/i915: Use EIO instead of EAGAIN for sink CRC error. If something while getting panel CRC this means that probably hw I/O error so hw is busted and try again shouldn't help much. Signed-off-by: Rodrigo Vivi Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_dp.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 72bf533..5975445 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -3800,21 +3800,21 @@ int intel_dp_sink_crc(struct intel_dp *intel_dp, u8 *crc) u8 buf[1]; if (drm_dp_dpcd_readb(&intel_dp->aux, DP_TEST_SINK_MISC, buf) < 0) - return -EAGAIN; + return -EIO; if (!(buf[0] & DP_TEST_CRC_SUPPORTED)) return -ENOTTY; if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, DP_TEST_SINK_START) < 0) - return -EAGAIN; + return -EIO; /* Wait 2 vblanks to be sure we will have the correct CRC value */ intel_wait_for_vblank(dev, intel_crtc->pipe); intel_wait_for_vblank(dev, intel_crtc->pipe); if (drm_dp_dpcd_read(&intel_dp->aux, DP_TEST_CRC_R_CR, crc, 6) < 0) - return -EAGAIN; + return -EIO; drm_dp_dpcd_writeb(&intel_dp->aux, DP_TEST_SINK, 0); return 0; -- 2.7.4