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Message-ID: <CAHp75VeP42nhAnjWMXnsHpd7SQhJ2G1kqX6mbEHxnpFHhKWYHg@mail.gmail.com>
Date: Wed, 18 Jan 2023 18:17:27 +0200
From: Andy Shevchenko <andy.shevchenko@...il.com>
To: Brent Pappas <bpappas@...pasbrent.com>
Cc: ailus@...ux.intel.com, error27@...il.com,
gregkh@...uxfoundation.org, hdegoede@...hat.com,
linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
linux-staging@...ts.linux.dev, mchehab@...nel.org
Subject: Re: [PATCH v6] media: atomisp: pci: Replace bytes macros with functions
On Wed, Jan 18, 2023 at 6:08 PM Brent Pappas <bpappas@...pasbrent.com> wrote:
>
> Replace the function-like macros FPNTBL_BYTES(), SCTBL_BYTES(), and
> MORPH_PLANE_BYTES() with functions to comply with Linux coding style
> standards.
> Replace multiplication with calls to array_size() and array3_size()
> to prevent accidental arithmetic overflow.
In my MUA I don't clearly see if indentations are really being fixed,
assuming that
Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
Thank you and keep going!
> Signed-off-by: Brent Pappas <bpappas@...pasbrent.com>
> ---
> Changelog:
> V1 -> V2: Use size_mul() to perform size_t multiplication without risk of
> overflow.
> Remove the inline keyword from function definitions.
>
> V2 -> V3: Add commit message.
>
> V3 -> V4: Use array_size() and array3_size() for multiplication.
>
> V4 -> V5: Fix indentation.
>
> V5 -> V6: Try again to fix indentation (use tabs of size 8).
>
> .../staging/media/atomisp/pci/sh_css_params.c | 38 +++++++++++--------
> 1 file changed, 23 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/staging/media/atomisp/pci/sh_css_params.c b/drivers/staging/media/atomisp/pci/sh_css_params.c
> index f08564f58242..7e111df5c09d 100644
> --- a/drivers/staging/media/atomisp/pci/sh_css_params.c
> +++ b/drivers/staging/media/atomisp/pci/sh_css_params.c
> @@ -98,17 +98,27 @@
> #include "sh_css_frac.h"
> #include "ia_css_bufq.h"
>
> -#define FPNTBL_BYTES(binary) \
> - (sizeof(char) * (binary)->in_frame_info.res.height * \
> - (binary)->in_frame_info.padded_width)
> +static size_t fpntbl_bytes(const struct ia_css_binary *binary)
> +{
> + return array3_size(sizeof(char),
> + binary->in_frame_info.res.height,
> + binary->in_frame_info.padded_width);
> +}
>
> -#define SCTBL_BYTES(binary) \
> - (sizeof(unsigned short) * (binary)->sctbl_height * \
> - (binary)->sctbl_aligned_width_per_color * IA_CSS_SC_NUM_COLORS)
> +static size_t sctbl_bytes(const struct ia_css_binary *binary)
> +{
> + return size_mul(sizeof(unsigned short),
> + array3_size(binary->sctbl_height,
> + binary->sctbl_aligned_width_per_color,
> + IA_CSS_SC_NUM_COLORS));
> +}
>
> -#define MORPH_PLANE_BYTES(binary) \
> - (SH_CSS_MORPH_TABLE_ELEM_BYTES * (binary)->morph_tbl_aligned_width * \
> - (binary)->morph_tbl_height)
> +static size_t morph_plane_bytes(const struct ia_css_binary *binary)
> +{
> + return array3_size(SH_CSS_MORPH_TABLE_ELEM_BYTES,
> + binary->morph_tbl_aligned_width,
> + binary->morph_tbl_height);
> +}
>
> /* We keep a second copy of the ptr struct for the SP to access.
> Again, this would not be necessary on the chip. */
> @@ -3279,7 +3289,7 @@ sh_css_params_write_to_ddr_internal(
> if (binary->info->sp.enable.fpnr) {
> buff_realloced = reallocate_buffer(&ddr_map->fpn_tbl,
> &ddr_map_size->fpn_tbl,
> - (size_t)(FPNTBL_BYTES(binary)),
> + fpntbl_bytes(binary),
> params->config_changed[IA_CSS_FPN_ID],
> &err);
> if (err) {
> @@ -3304,7 +3314,7 @@ sh_css_params_write_to_ddr_internal(
>
> buff_realloced = reallocate_buffer(&ddr_map->sc_tbl,
> &ddr_map_size->sc_tbl,
> - SCTBL_BYTES(binary),
> + sctbl_bytes(binary),
> params->sc_table_changed,
> &err);
> if (err) {
> @@ -3538,8 +3548,7 @@ sh_css_params_write_to_ddr_internal(
> buff_realloced |=
> reallocate_buffer(virt_addr_tetra_x[i],
> virt_size_tetra_x[i],
> - (size_t)
> - (MORPH_PLANE_BYTES(binary)),
> + morph_plane_bytes(binary),
> params->morph_table_changed,
> &err);
> if (err) {
> @@ -3549,8 +3558,7 @@ sh_css_params_write_to_ddr_internal(
> buff_realloced |=
> reallocate_buffer(virt_addr_tetra_y[i],
> virt_size_tetra_y[i],
> - (size_t)
> - (MORPH_PLANE_BYTES(binary)),
> + morph_plane_bytes(binary),
> params->morph_table_changed,
> &err);
> if (err) {
> --
> 2.34.1
>
--
With Best Regards,
Andy Shevchenko
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