[Intel-gfx] [PATCH v2] drm/i915: Check for fused or unused pipes

[Jani Nikula]

On Mon, 18 Dec 2017, Mika Kahola <mika.kahola at intel.com> wrote:
> We may have fused or unused pipes in our system. Let's check that the pipe
> in question is within limits of accessible pipes. In case, that we are not
> able to access the pipe, we return early with a warning.
>
> v2: Rephrasing of the commit message (Jani)
>
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103206
> Reported-by: Thomas Gleixner <tglx at linutronix.de>
> Tested-by: Jaswinder Singh Rajput <jaswinder at perfectintelligent.com>
> Suggested-by: Jani Nikula <jani.nikula at intel.com>
> Reviewed-by: Jani Nikula <jani.nikula at intel.com>
> Signed-off-by: Mika Kahola <mika.kahola at intel.com>

Pushed, thanks for the patch, sorry for the delay.

BR,
Jani.

> ---
>  drivers/gpu/drm/i915/intel_audio.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c
> index f1502a0..522d54f 100644
> --- a/drivers/gpu/drm/i915/intel_audio.c
> +++ b/drivers/gpu/drm/i915/intel_audio.c
> @@ -779,7 +779,7 @@ static struct intel_encoder *get_saved_enc(struct drm_i915_private *dev_priv,
>  {
>  	struct intel_encoder *encoder;
>  
> -	if (WARN_ON(pipe >= INTEL_INFO(dev_priv)->num_pipes))
> +	if (WARN_ON(pipe >= ARRAY_SIZE(dev_priv->av_enc_map)))
>  		return NULL;
>  
>  	/* MST */

-- 
Jani Nikula, Intel Open Source Technology Center