From 8ac36ec1e370cb8ff9c082972ad0570bba37381a Mon Sep 17 00:00:00 2001
From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
Date: Tue, 11 Mar 2014 19:37:33 +0200
Subject: [PATCH] drm/i915: Reduce the time we hold struct mutex in
 intel_pipe_set_base()
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We don't need to hold struct_mutex all through intel_pipe_set_base(),
just need to hold it while pinning/unpinning the buffers.

So reduce the struct_mutext usage in intel_pipe_set_base() just like we
did for the sprite code in:
 commit 82284b6becdbef6d8cd3fb43e8698510833a5129
 Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
 Date:   Tue Oct 1 18:02:12 2013 +0300

    drm/i915: Reduce the time we hold struct mutex in sprite update_plane code

The FBC and PSR locking is still entirely fubar. That stuff was
previouly done while holding struct_mutex, so leave it there for now.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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