drm/nouveau/disp/dp: ensure sink is powered up before attempting link training

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commit 95664e66fa upstream.

This can happen under some annoying circumstances, and is a quick fix
until more substantial changes can be made.

Fixed eDP mode changes on (at least) the Lenovo P50.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Ben Skeggs 2016-02-18 08:14:19 +10:00 • committed by Greg Kroah-Hartman

parent a6976c7be5

commit 2168fe3d7b

2 changed files with 16 additions and 0 deletions

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10

drivers/gpu/drm/nouveau/nvkm/engine/disp/dport.c

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6

drivers/gpu/drm/nouveau/nvkm/engine/disp/dport.h

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