[Nouveau] [PATCH] drm/nouveau: make cursor_set implementation consistent with other drivers

[Ben Skeggs]

On Sun, 2011-05-01 at 23:49 +0200, Marcin Slusarz wrote:
> When xorg state tracker wants to hide the cursor it calls set_cursor
> with NULL buffer_handle and size=0x0, but nouveau refuses to hide it
> because size is not 64x64... which is a bit odd. Both radeon and intel
> check buffer_handle before validating size of cursor, so make nouveau
> implementation consistent with them.
Pushed, thanks.

> 
> Signed-off-by: Marcin Slusarz <marcin.slusarz at gmail.com>
> ---
>  drivers/gpu/drm/nouveau/nv04_crtc.c |    6 +++---
>  drivers/gpu/drm/nouveau/nv50_crtc.c |    6 +++---
>  2 files changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/nouveau/nv04_crtc.c b/drivers/gpu/drm/nouveau/nv04_crtc.c
> index cc3cd17..3c78bc8 100644
> --- a/drivers/gpu/drm/nouveau/nv04_crtc.c
> +++ b/drivers/gpu/drm/nouveau/nv04_crtc.c
> @@ -943,14 +943,14 @@ nv04_crtc_cursor_set(struct drm_crtc *crtc, struct drm_file *file_priv,
>  	struct drm_gem_object *gem;
>  	int ret = 0;
>  
> -	if (width != 64 || height != 64)
> -		return -EINVAL;
> -
>  	if (!buffer_handle) {
>  		nv_crtc->cursor.hide(nv_crtc, true);
>  		return 0;
>  	}
>  
> +	if (width != 64 || height != 64)
> +		return -EINVAL;
> +
>  	gem = drm_gem_object_lookup(dev, file_priv, buffer_handle);
>  	if (!gem)
>  		return -ENOENT;
> diff --git a/drivers/gpu/drm/nouveau/nv50_crtc.c b/drivers/gpu/drm/nouveau/nv50_crtc.c
> index e900a51..75ad2dc 100644
> --- a/drivers/gpu/drm/nouveau/nv50_crtc.c
> +++ b/drivers/gpu/drm/nouveau/nv50_crtc.c
> @@ -349,14 +349,14 @@ nv50_crtc_cursor_set(struct drm_crtc *crtc, struct drm_file *file_priv,
>  	struct drm_gem_object *gem;
>  	int ret = 0, i;
>  
> -	if (width != 64 || height != 64)
> -		return -EINVAL;
> -
>  	if (!buffer_handle) {
>  		nv_crtc->cursor.hide(nv_crtc, true);
>  		return 0;
>  	}
>  
> +	if (width != 64 || height != 64)
> +		return -EINVAL;
> +
>  	gem = drm_gem_object_lookup(dev, file_priv, buffer_handle);
>  	if (!gem)
>  		return -ENOENT;