[Intel-gfx] [PATCH] drm/i915: Reset dpll_hw_state when selecting a new pll on hsw

[Maarten Lankhorst]

Op 23-09-15 om 17:34 schreef Gabriel Feceoru:
> Using 2 connectors (DVI and VGA) will cause wrpll to be set for
> INTEL_OUTPUT_HDMI but never reset if switching to INTEL_OUTPUT_VGA
>
> Supresses errors like these:
> [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in dpll_hw_state.wrpll
>
Looks like a good idea to always zero it.

Reviewed-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>