drm/amdgpu: fix dp link rate selection (v2)
authorAlex Deucher <alexander.deucher@amd.com>
Thu, 17 Dec 2015 14:57:49 +0000 (09:57 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Mon, 21 Dec 2015 21:38:51 +0000 (16:38 -0500)
commit41869c1c7fe583dec932eb3d87de2e010b30a737
tree2fe4e2f7f046ab7db4d3b2b756f344185391d1ce
parentb24c683af14bdc52b81899937ef2e52c15fe4768
drm/amdgpu: fix dp link rate selection (v2)

Need to properly handle the max link rate in the dpcd.
This prevents some cases where 5.4 Ghz is selected when
it shouldn't be.

v2: simplify logic, add array bounds check

Reviewed-by: Tom St Denis <tom.stdenis@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/amdgpu/atombios_dp.c