rockchip: mkimage: Use an existing macro instead of a decimal value

Depending on the SoC, a header of four characters is prepended to the
image. There is already a macro defining the number of characters:
RK_SPL_HDR_SIZE, so use it instead of hardcoding "4".

Signed-off-by: Miquel Raynal <miquel.raynal at bootlin.com>
---
 tools/rkcommon.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

On 2020/3/19 ??12:22, Miquel Raynal wrote:
> Depending on the SoC, a header of four characters is prepended to the
> image. There is already a macro defining the number of characters:
> RK_SPL_HDR_SIZE, so use it instead of hardcoding "4".
>
> Signed-off-by: Miquel Raynal <miquel.raynal at bootlin.com>


Reviewed-by: Kever Yang <kever.yang at rock-chips.com>


Thanks,
- Kever
> ---
>   tools/rkcommon.c | 6 ++++--
>   1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/tools/rkcommon.c b/tools/rkcommon.c
> index 0d908daee80..a80899e2806 100644
> --- a/tools/rkcommon.c
> +++ b/tools/rkcommon.c
> @@ -246,11 +246,13 @@ static int rkcommon_parse_header(const void *buf, struct header0_info *header0,
>   					   rkcommon_offset_to_spi(hdr1_offset));
>   
>   	for (i = 0; i < ARRAY_SIZE(spl_infos); i++) {
> -		if (!memcmp(&hdr1_sdmmc->magic, spl_infos[i].spl_hdr, 4)) {
> +		if (!memcmp(&hdr1_sdmmc->magic, spl_infos[i].spl_hdr,
> +			    RK_SPL_HDR_SIZE)) {
>   			if (spl_info)
>   				*spl_info = &spl_infos[i];
>   			return IH_TYPE_RKSD;
> -		} else if (!memcmp(&hdr1_spi->magic, spl_infos[i].spl_hdr, 4)) {
> +		} else if (!memcmp(&hdr1_spi->magic, spl_infos[i].spl_hdr,
> +				   RK_SPL_HDR_SIZE)) {
>   			if (spl_info)
>   				*spl_info = &spl_infos[i];
>   			return IH_TYPE_RKSPI;