From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Thu, 22 May 2014 14:48:06 +0000 (+0300)
Subject: drm/i915: Keep vblank interrupts enabled while enabling/disabling planes
X-Git-Tag: cleanup-for-v3.18~84^2~63^2~91
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f98551ae9222ce6cbfe5e9644fa129acd8264a97;p=pandora-kernel.git

drm/i915: Keep vblank interrupts enabled while enabling/disabling planes

Because of the upcoming vblank interrupt driven watermark update
mechanism we will have use for vblank interrupts during plane
enabling/disabling. So don't call drm_vblank_off() until planes
are off, and call drm_vblank_on() just before we start to enable
the planes.

v2: Pimp commit message (Paulo)

Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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