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authorAlex Deucher <alexdeucher@gmail.com>2014-04-30 15:27:15 +0200
committerChristian König <christian.koenig@amd.com>2014-05-01 12:28:09 +0200
commitaa019b791a3e138ca0eaa38e72b4ea97d482a7bc (patch)
treec410500d6aae5314a2be50196d1e9efb687144a8 /arch
parentdrm/radeon: avoid high jitter with small frac divs (diff)
downloadlinux-aa019b791a3e138ca0eaa38e72b4ea97d482a7bc.tar.xz
linux-aa019b791a3e138ca0eaa38e72b4ea97d482a7bc.zip
drm/radeon/dp: check for errors in dpcd reads
Check to make sure the transaction succeeded before using the register value. Fixes occasional link training problems. Noticed-by: Sergei Antonov <saproj@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com>
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