[PATCH 4/4] mtk-mdp: fix compilation warnings if !DEBUG

[minghsiu.tsai@mediatek.com (Minghsiu Tsai)]

On Fri, 2016-10-21 at 11:59 -0200, Mauro Carvalho Chehab wrote:
> The mtk_mdp_dbg() is empty if !DEBUG. This causes the following
> warnings:
> 
> 	drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c: In function ?mtk_mdp_try_fmt_mplane?:
> 	drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c:231:52: warning: suggest braces around empty body in an ?if? statement [-Wempty-body]
> 	        org_w, org_h, pix_mp->width, pix_mp->height);
>                                                     ^
> 	drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c: In function ?mtk_mdp_m2m_start_streaming?:
> 	drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c:414:21: warning: suggest braces around empty body in an ?if? statement [-Wempty-body]
> 	        ctx->id, ret);
> 	                     ^
> 
> With could actually make the code to do something wrong. So,
> add an empty block to make it be parsed ok.
> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
> ---
>  drivers/media/platform/mtk-mdp/mtk_mdp_core.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_core.h b/drivers/media/platform/mtk-mdp/mtk_mdp_core.h
> index 2e979f97d1df..848569d4ab90 100644
> --- a/drivers/media/platform/mtk-mdp/mtk_mdp_core.h
> +++ b/drivers/media/platform/mtk-mdp/mtk_mdp_core.h
> @@ -250,7 +250,7 @@ extern int mtk_mdp_dbg_level;
>  
>  #else
>  
> -#define mtk_mdp_dbg(level, fmt, args...)
> +#define mtk_mdp_dbg(level, fmt, args...) {}
>  

Acked-by: Minghsiu Tsai <minghsiu.tsai@mediatek.com>


> #define mtk_mdp_err(fmt, args...)
>  #define mtk_mdp_dbg_enter()
>  #define mtk_mdp_dbg_leave()