drm/amd/display: fix MST link training fail division by 0
authorEric Yang <Eric.Yang2@amd.com>
Wed, 1 Nov 2017 19:43:47 +0000 (15:43 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Tue, 14 Nov 2017 16:32:46 +0000 (11:32 -0500)
commit00f713c6dc657397ba37b42d7f6887f526c730c6
tree492fc0db4fc5d7b417cb9e6a39580bce0ccbc33a
parent82e9781053c8a6aa3515aea3ade76546afb4c082
drm/amd/display: fix MST link training fail division by 0

When link training fail in MST case, we will divide by 0
when calculating avg_time_slots_per_mtp, so we cannot
proceed.

Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/display/dc/core/dc_link.c