drm/i915: Add missing POSTING_READ()s to BXT dbuf enable sequence

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Do a POSTING_READ() between the DBUF_CTL register write and the
udelay() to make sure we really wait after the register write has
happened.

Spotted while reviewing Damien's SKL cdclk patch which had the
POSTING_READ()s.

Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Ville Syrjälä 2015-05-06 14:28:57 +03:00 • committed by Daniel Vetter

parent 813b5e6971

commit 22e02c0b4b

1 changed files with 4 additions and 0 deletions

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drivers/gpu/drm/i915/intel_display.c

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