drm/amd/display: early return if not in vga mode in disable_vga

The work around for hw bug causes S3 resume failure. Don't execute
disable vga logic if not in vga mode.

Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Yang 2018-02-28 14:45:36 -05:00 • committed by Alex Deucher
commit abca24007e
2 changed files with 13 additions and 7 deletions