From: Mario Kleiner <mario.kleiner.de@gmail.com>
Date: Mon, 12 May 2014 22:42:08 +0000 (+0200)
Subject: drm/nouveau/kms/nv04-nv40: fix pageflip events via special case.
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~44^2~2^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=af4870e406126b7ac0ae7c7ce5751f25ebe60f28;p=pandora-kernel.git

drm/nouveau/kms/nv04-nv40: fix pageflip events via special case.

Cards with nv04 display engine can't reliably use vblank
counts and timestamps computed via drm_handle_vblank(), as
the function gets invoked after sending the pageflip events.

Fix this by defaulting to the old crtcid = -1 fallback path
on <= NV-50 cards, and only using the precise path on NV-50
and later.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Cc: <stable@vger.kernel.org> # 3.13+
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