drm/i915: Fix pipe off timeout handling for pre-gen4
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Fri, 11 Oct 2013 11:21:31 +0000 (14:21 +0300)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Fri, 11 Oct 2013 21:22:25 +0000 (23:22 +0200)
commitfbf49ea21bd4f2ed88d678f7fc8b34a7dd0a7460
tree29689bcf81fb53f1f11d63f5fbe921e70fa2ceb5
parent4994aa8cc10177f620b096738be52eee8a181a9a
drm/i915: Fix pipe off timeout handling for pre-gen4

The current pre-gen4 pipe off code might break out of the loop
due to the timeout, but then the fail to print the warning.

Refactor the code a bit to use wait_for() to avoid the problem,
and that we also re-check the condition after the timeout has
expired.

v2: Use wait_for()

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>
drivers/gpu/drm/i915/intel_display.c