[Intel-gfx] [PATCH 6/7] drm/i915: check the power well on i915_pipe_enabled

[Damien Lespiau]

On Thu, Apr 18, 2013 at 04:35:45PM -0300, Paulo Zanoni wrote:
> From: Paulo Zanoni <paulo.r.zanoni at intel.com>
> 
> This fixes "unclaimed register" messages when the power well is
> disabled and there's a GPU hang.
> 
> v2: Use the new intel_display_power_enabled().
> 
> Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
> ---
>  drivers/gpu/drm/i915/i915_irq.c |    4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> index 932e7f8..fda2998 100644
> --- a/drivers/gpu/drm/i915/i915_irq.c
> +++ b/drivers/gpu/drm/i915/i915_irq.c
> @@ -184,6 +184,10 @@ i915_pipe_enabled(struct drm_device *dev, int pipe)
>  	enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
>  								      pipe);
>  
> +	if (cpu_transcoder != TRANSCODER_EDP &&
> +	    !intel_display_power_enabled(dev, POWER_DOMAIN_OTHER))
> +		return false;
> +

Same remark as in patch 3, I'd rather have a simplified logic asking
explicitely if the transcoder we're checking is powered.

-- 
Damien