drm/radeon: fix dp link rate selection (v2)
authorAlex Deucher <alexander.deucher@amd.com>
Thu, 17 Dec 2015 15:23:34 +0000 (10:23 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Mon, 21 Dec 2015 21:39:02 +0000 (16:39 -0500)
commit092c96a8ab9d1bd60ada2ed385cc364ce084180e
tree5d54ecac3886f9f3eee6444b71b22220c75a601a
parent41869c1c7fe583dec932eb3d87de2e010b30a737
drm/radeon: 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/radeon/atombios_dp.c
drivers/gpu/drm/radeon/radeon_dp_mst.c
drivers/gpu/drm/radeon/radeon_mode.h