Hi Andy,
On Sat, Jan 27, 2018 at 04:24:39PM +0000, Yeh, Andy wrote:
> Fix a few sparse warnings related to conversion between CPU and big endian.
> Also simplify the code in the process.
>
> Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
> Acked-by: Andy Yeh <andy....@intel.com>
Thanks for the ack. There's no need to resend the patch for that, you can
simply reply to the patch itself.
> ---
> since v2:
>
> - Count loop downwards, not up.
>
> drivers/media/i2c/imx258.c | 23 +++++++++--------------
> 1 file changed, 9 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c index
> a7e58bd23de7..213429cca8b5 100644
> --- a/drivers/media/i2c/imx258.c
> +++ b/drivers/media/i2c/imx258.c
> @@ -440,10 +440,10 @@ static int imx258_read_reg(struct imx258 *imx258, u16
> reg, u32 len, u32 *val) {
> struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
> struct i2c_msg msgs[2];
> + __be16 reg_addr_be = cpu_to_be16(reg);
> + __be32 data_be = 0;
> u8 *data_be_p;
> int ret;
> - u32 data_be = 0;
> - u16 reg_addr_be = cpu_to_be16(reg);
>
> if (len > 4)
> return -EINVAL;
> @@ -474,24 +474,19 @@ static int imx258_read_reg(struct imx258 *imx258, u16
> reg, u32 len, u32 *val) static int imx258_write_reg(struct imx258 *imx258,
> u16 reg, u32 len, u32 val) {
> struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
> - int buf_i, val_i;
> - u8 buf[6], *val_p;
> + u8 __buf[6], *buf = __buf;
> + int i;
>
> if (len > 4)
> return -EINVAL;
>
> - buf[0] = reg >> 8;
> - buf[1] = reg & 0xff;
> + *buf++ = reg >> 8;
> + *buf++ = reg & 0xff;
>
> - val = cpu_to_be32(val);
> - val_p = (u8 *)&val;
> - buf_i = 2;
> - val_i = 4 - len;
> + for (i = len - 1; i >= 0; i--)
> + *buf++ = (u8)(val >> (i << 3));
>
> - while (val_i < 4)
> - buf[buf_i++] = val_p[val_i++];
> -
> - if (i2c_master_send(client, buf, len + 2) != len + 2)
> + if (i2c_master_send(client, __buf, len + 2) != len + 2)
> return -EIO;
>
> return 0;
> --
> 2.11.0
>
--
Sakari Ailus
sakari.ai...@linux.intel.com
