[Intel-gfx] [PATCH] drm/i915: Fix logic fumble in rotation vs. ccs check

[Souza, Jose]

On Tue, 2018-09-18 at 16:10 +0300, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> Smatch reports:
> ../drivers/gpu/drm/i915/intel_sprite.c:1192 skl_plane_check_fb()
> warn: was || intended here instead of &&?
> 
> Obviously smatch is correct here since we're trying to check if we're
> using either of the ccs modifiers. Since we now have
> is_ccs_modifier()
> let's use it to fix this.
> 

Reviewed-by: José Roberto de Souza <jose.souza at intel.com>

> Cc: Dan Carpenter <dan.carpenter at oracle.com>
> Cc: José Roberto de Souza <jose.souza at intel.com>
> Reported-by: Dan Carpenter <dan.carpenter at oracle.com>
> Fixes: e21c2d331018 ("drm/i915: Move skl plane fb related checks into
> a better place")
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> ---
>  drivers/gpu/drm/i915/intel_sprite.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_sprite.c
> b/drivers/gpu/drm/i915/intel_sprite.c
> index 8821e59b70ea..d4c8e10fc90b 100644
> --- a/drivers/gpu/drm/i915/intel_sprite.c
> +++ b/drivers/gpu/drm/i915/intel_sprite.c
> @@ -1190,8 +1190,7 @@ static int skl_plane_check_fb(const struct
> intel_crtc_state *crtc_state,
>  		return 0;
>  
>  	if (rotation & ~(DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180) &&
> -	    (fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS &&
> -	     fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS)) {
> +	    is_ccs_modifier(fb->modifier)) {
>  		DRM_DEBUG_KMS("RC support only with 0/180 degree
> rotation (%x)\n",
>  			      rotation);
>  		return -EINVAL;