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drm/i915: remove unexplained vblank wait in the DP off code 

I don't think this is necessary; at least it doesn't appear to be on my
BYT.  Dropping it speeds up our shutdown code a little, in some cases
resulting in faster init times.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Jesse Barnes 2014-04-11 14:25:41 -07:00 committed by Daniel Vetter
parent 444c9a08bf
commit 93c9c19b3d
1 changed files with 0 additions and 3 deletions
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3
drivers/gpu/drm/i915/intel_dp.c
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@ -2779,9 +2779,6 @@ intel_dp_link_down(struct intel_dp *intel_dp)
} }
POSTING_READ(intel_dp->output_reg); POSTING_READ(intel_dp->output_reg);
/* We don't really know why we're doing this */
intel_wait_for_vblank(dev, intel_crtc->pipe);
if (HAS_PCH_IBX(dev) && if (HAS_PCH_IBX(dev) &&
I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) { I915_READ(intel_dp->output_reg) & DP_PIPEB_SELECT) {
struct drm_crtc *crtc = intel_dig_port->base.base.crtc; struct drm_crtc *crtc = intel_dig_port->base.base.crtc;