linux-kernel - Re: [PATCH v2 16/20] media: davinci: vpbe_osd: mark read reg function as __always

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Date:   Mon, 29 Nov 2021 10:19:04 +0000
From:   "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Cc:     linuxarm@...wei.com, mauro.chehab@...wei.com,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-media <linux-media@...r.kernel.org>, llvm@...ts.linux.dev
Subject: Re: [PATCH v2 16/20] media: davinci: vpbe_osd: mark read reg function
 as __always_unused

On Mon, Nov 29, 2021 at 9:48 AM Mauro Carvalho Chehab
<mchehab+huawei@...nel.org> wrote:
>
> Such function is currently unused, but could be needed in the
> future. So, keep it, marking it as __always_unused, in order to
> avoid a clang W=1 error.
>
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
> ---
>
> See [PATCH v2 00/20] at: https://lore.kernel.org/all/cover.1638179135.git.mchehab+huawei@kernel.org/
>
>  drivers/media/platform/davinci/vpbe_osd.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
Reviewed-by: Lad Prabhakar <prabhakar.csengg@...il.com>

Cheers,
Prabhakar

> diff --git a/drivers/media/platform/davinci/vpbe_osd.c b/drivers/media/platform/davinci/vpbe_osd.c
> index 91b571a0ac2c..32f7ef547c82 100644
> --- a/drivers/media/platform/davinci/vpbe_osd.c
> +++ b/drivers/media/platform/davinci/vpbe_osd.c
> @@ -45,7 +45,7 @@ static const struct platform_device_id vpbe_osd_devtype[] = {
>  MODULE_DEVICE_TABLE(platform, vpbe_osd_devtype);
>
>  /* register access routines */
> -static inline u32 osd_read(struct osd_state *sd, u32 offset)
> +static inline u32 __always_unused osd_read(struct osd_state *sd, u32 offset)
>  {
>         struct osd_state *osd = sd;
>
> --
> 2.33.1
>