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authorAlex Deucher <alexander.deucher@amd.com>2014-07-03 11:17:55 -0400
committerAlex Deucher <alexander.deucher@amd.com>2014-07-10 17:01:28 -0400
commitf6be5e64500abbba44e191e1ca0f3366c7d0291b (patch)
tree81cbedf719ca761715a0ecc1b9de292d287df664
parent2db38e06ecda80063d748df7bd79b7186c8831e0 (diff)
downloadlinux-f6be5e64500abbba44e191e1ca0f3366c7d0291b.tar.gz
drm/radeon/dp: return -EIO for flags not zero case
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 <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
-rw-r--r--drivers/gpu/drm/radeon/atombios_dp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
index 35f4182c63b..b1e11f8434e 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -127,7 +127,7 @@ 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");
- r = -EBUSY;
+ r = -EIO;
goto done;
}