RE: [PATCH 09/15] media: s5p-mfc: constify s5p_mfc_fmt structures

["Aakarsh Jain" <aakarsh.jain@samsung.com>]

> -----Original Message-----
> From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> Sent: 24 December 2023 21:14
> To: Marek Szyprowski <m.szyprowski@samsung.com>; Andrzej Hajda
> <andrzej.hajda@intel.com>; Mauro Carvalho Chehab
> <mchehab@kernel.org>
> Cc: Aakarsh Jain <aakarsh.jain@samsung.com>; linux-fsd@tesla.coma; linux-
> samsung-soc@vger.kernel.org; Smitha T Murthy
> <smithatmurthy@gmail.com>; linux-arm-kernel@lists.infradead.org; linux-
> media@vger.kernel.org; linux-kernel@vger.kernel.org; Krzysztof Kozlowski
> <krzysztof.kozlowski@linaro.org>
> Subject: [PATCH 09/15] media: s5p-mfc: constify s5p_mfc_fmt structures
> 
> Static "s5p_mfc_fmt" structures are not modified by the driver, so they can
> be made const for code safety.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> ---
>  drivers/media/platform/samsung/s5p-mfc/s5p_mfc_common.h | 4 ++--
>  drivers/media/platform/samsung/s5p-mfc/s5p_mfc_dec.c    | 6 +++---
>  drivers/media/platform/samsung/s5p-mfc/s5p_mfc_enc.c    | 8 ++++----
>  3 files changed, 9 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_common.h
> b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_common.h
> index fa556f27fa06..e9283020070e 100644
> --- a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_common.h
> +++ b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_common.h
> @@ -633,8 +633,8 @@ struct s5p_mfc_ctx {
>  	unsigned int int_err;
>  	wait_queue_head_t queue;
> 
> -	struct s5p_mfc_fmt *src_fmt;
> -	struct s5p_mfc_fmt *dst_fmt;
> +	const struct s5p_mfc_fmt *src_fmt;
> +	const struct s5p_mfc_fmt *dst_fmt;
> 
>  	struct vb2_queue vq_src;
>  	struct vb2_queue vq_dst;
> diff --git a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_dec.c
> b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_dec.c
> index 4dbe8792ac3d..2f664c7e9e4c 100644
> --- a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_dec.c
> +++ b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_dec.c
> @@ -27,7 +27,7 @@
>  #include "s5p_mfc_opr.h"
>  #include "s5p_mfc_pm.h"
> 
> -static struct s5p_mfc_fmt formats[] = {
> +static const struct s5p_mfc_fmt formats[] = {
>  	{
>  		.fourcc		= V4L2_PIX_FMT_NV12MT_16X16,
>  		.codec_mode	= S5P_MFC_CODEC_NONE,
> @@ -163,7 +163,7 @@ static struct s5p_mfc_fmt formats[] = {  #define
> NUM_FORMATS ARRAY_SIZE(formats)
> 
>  /* Find selected format description */
> -static struct s5p_mfc_fmt *find_format(struct v4l2_format *f, unsigned int
> t)
> +static const struct s5p_mfc_fmt *find_format(struct v4l2_format *f,
> +unsigned int t)
>  {
>  	unsigned int i;
> 
> @@ -387,7 +387,7 @@ static int vidioc_g_fmt(struct file *file, void *priv,
> struct v4l2_format *f)  static int vidioc_try_fmt(struct file *file, void *priv,
> struct v4l2_format *f)  {
>  	struct s5p_mfc_dev *dev = video_drvdata(file);
> -	struct s5p_mfc_fmt *fmt;
> +	const struct s5p_mfc_fmt *fmt;
> 
>  	mfc_debug(2, "Type is %d\n", f->type);
>  	if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { diff --git
> a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_enc.c
> b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_enc.c
> index 4b4c129c09e7..d6a4b9c701eb 100644
> --- a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_enc.c
> +++ b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_enc.c
> @@ -30,7 +30,7 @@
>  #define DEF_SRC_FMT_ENC	V4L2_PIX_FMT_NV12M
>  #define DEF_DST_FMT_ENC	V4L2_PIX_FMT_H264
> 
> -static struct s5p_mfc_fmt formats[] = {
> +static const struct s5p_mfc_fmt formats[] = {
>  	{
>  		.fourcc		= V4L2_PIX_FMT_NV12MT_16X16,
>  		.codec_mode	= S5P_MFC_CODEC_NONE,
> @@ -97,7 +97,7 @@ static struct s5p_mfc_fmt formats[] = {  };
> 
>  #define NUM_FORMATS ARRAY_SIZE(formats) -static struct s5p_mfc_fmt
> *find_format(struct v4l2_format *f, unsigned int t)
> +static const struct s5p_mfc_fmt *find_format(struct v4l2_format *f,
> +unsigned int t)
>  {
>  	unsigned int i;
> 
> @@ -1394,7 +1394,7 @@ static int vidioc_g_fmt(struct file *file, void *priv,
> struct v4l2_format *f)  static int vidioc_try_fmt(struct file *file, void *priv,
> struct v4l2_format *f)  {
>  	struct s5p_mfc_dev *dev = video_drvdata(file);
> -	struct s5p_mfc_fmt *fmt;
> +	const struct s5p_mfc_fmt *fmt;
>  	struct v4l2_pix_format_mplane *pix_fmt_mp = &f->fmt.pix_mp;
> 
>  	if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) { @@ -
> 2355,7 +2355,7 @@ static const struct v4l2_ioctl_ops s5p_mfc_enc_ioctl_ops
> = {
>  	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,  };
> 
> -static int check_vb_with_fmt(struct s5p_mfc_fmt *fmt, struct vb2_buffer
> *vb)
> +static int check_vb_with_fmt(const struct s5p_mfc_fmt *fmt, struct
> +vb2_buffer *vb)
>  {
>  	int i;
> 
> 
> --
> 2.34.1

Reviewed-by: Aakarsh Jain <aakarsh.jain@samsung.com>

Thanks!


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