linux-kernel - Re: [PATCH 08/12] drm/nouveau/graph: enable when using external firmware

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Date:	Mon, 24 Mar 2014 23:58:03 +0100
From:	Thierry Reding <thierry.reding@...il.com>
To:	Alexandre Courbot <acourbot@...dia.com>
Cc:	Ben Skeggs <bskeggs@...hat.com>, nouveau@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
	linux-kernel@...r.kernel.org, gnurou@...il.com
Subject: Re: [PATCH 08/12] drm/nouveau/graph: enable when using external
 firmware

On Mon, Mar 24, 2014 at 05:42:30PM +0900, Alexandre Courbot wrote:
[...]
> diff --git a/drivers/gpu/drm/nouveau/core/engine/graph/nvc0.c b/drivers/gpu/drm/nouveau/core/engine/graph/nvc0.c
> index 6ef8bf181b2d..f997a18f5760 100644
> --- a/drivers/gpu/drm/nouveau/core/engine/graph/nvc0.c
> +++ b/drivers/gpu/drm/nouveau/core/engine/graph/nvc0.c
> @@ -1133,10 +1133,14 @@ nvc0_graph_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
>  	struct nvc0_graph_oclass *oclass = (void *)bclass;
>  	struct nouveau_device *device = nv_device(parent);
>  	struct nvc0_graph_priv *priv;
> +	bool use_fw;

Perhaps "ext_fw" or "use_ext_fw" would be more accurate.

>  	int ret, i;
>  
> +	use_fw = nouveau_boolopt(device->cfgopt, "NvGrUseFW", false);
> +
>  	ret = nouveau_graph_create(parent, engine, bclass,
> -				   (oclass->fecs.ucode != NULL), &priv);
> +				   (oclass->fecs.ucode != NULL) || use_fw,
> +				   &priv);

Or perhaps a more intuitive way would be to name the variable "enable"
and have something like:

	if (!nouveau_boolopt(device->cfgopt, "NvGrUseFW", false))
		enable = oclass->fecs.ucode != NULL;
	else
		enable = true;

	ret = nouveau_graph_create(parent, engine, bclass, enable, &priv);
	...

Thierry

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