drm/nouveau: make sure display hardware is reinitialised on runtime resume
commit 6fbb702e upstream. Linus commit 05c63c2f modified the runtime suspend/resume paths to skip over display-related tasks to avoid locking issues on resume. Unfortunately, this resulted in the display hardware being left in a partially initialised state, preventing subsequent modesets from completing. This commit unifies the (many) suspend/resume paths, bringing back display (and fbcon) handling in the runtime paths. Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Cc: Sven Joachim <svenjoac@gmx.de> Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
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