From f5040bb44d62a4754f98cd139ed2712495fa3a3f Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 3 Jul 2014 11:17:55 -0400 Subject: drm/radeon/dp: return -EIO for flags not zero case commit f6be5e64500abbba44e191e1ca0f3366c7d0291b upstream. If there are error flags in the aux transaction return -EIO rather than -EBUSY. -EIO restarts the whole transaction while -EBUSY jus retries. Fixes problematic aux transfers. Bug: https://bugs.freedesktop.org/show_bug.cgi?id=80684 Signed-off-by: Alex Deucher [bwh: Backported to 3.2: error code is returned directly here] Signed-off-by: Ben Hutchings --- drivers/gpu/drm/radeon/atombios_dp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c index 3254d51e55c9..e8a3c3122050 100644 --- a/drivers/gpu/drm/radeon/atombios_dp.c +++ b/drivers/gpu/drm/radeon/atombios_dp.c @@ -89,7 +89,7 @@ static int radeon_process_aux_ch(struct radeon_i2c_chan *chan, /* flags not zero */ if (args.v1.ucReplyStatus == 2) { DRM_DEBUG_KMS("dp_aux_ch flags not zero\n"); - return -EBUSY; + return -EIO; } /* error */ -- cgit v1.2.3