[PATCH v2 4/6] lib: fix fdt_parse_plicsw_node()

[Xiang W <wxjstz@126.com>]

? 2022-11-28???? 10:14 +0100?Heinrich Schuchardt???
> cpu_offset and cpu_intc_offset must be int to detect failed invocations of
> fdt_node_offset_by_phandle() or fdt_parent_offset().
> 
> After determining cpu_offset we have to check this value and not
> cpu_intc_offset.
> 
> Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Look good to me

Reviewed-by: Xiang W <wxjstz@126.com>
> ---
> v2:
> ????????check correct variable
> ---
> ?lib/utils/fdt/fdt_helper.c | 6 ++++--
> ?1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/lib/utils/fdt/fdt_helper.c b/lib/utils/fdt/fdt_helper.c
> index 976c96e..674f17b 100644
> --- a/lib/utils/fdt/fdt_helper.c
> +++ b/lib/utils/fdt/fdt_helper.c
> @@ -861,7 +861,7 @@ int fdt_parse_plicsw_node(void *fdt, int nodeoffset, unsigned long *plicsw_base,
> ?{
> ????????const fdt32_t *val;
> ????????int rc, i, count;
> -???????uint64_t reg_addr, reg_size, cpu_offset, cpu_intc_offset;
> +???????uint64_t reg_addr, reg_size;
> ????????u32 phandle, hwirq, hartid, hcount;
> ?
> ????????if (nodeoffset < 0 || !fdt || !plicsw_base ||
> @@ -882,6 +882,8 @@ int fdt_parse_plicsw_node(void *fdt, int nodeoffset, unsigned long *plicsw_base,
> ?
> ????????hcount = 0;
> ????????for (i = 0; i < (count / 2); i++) {
> +???????????????int cpu_offset, cpu_intc_offset;
> +
> ????????????????phandle = fdt32_to_cpu(val[2 * i]);
> ????????????????hwirq = fdt32_to_cpu(val[2 * i + 1]);
> ?
> @@ -890,7 +892,7 @@ int fdt_parse_plicsw_node(void *fdt, int nodeoffset, unsigned long *plicsw_base,
> ????????????????????????continue;
> ?
> ????????????????cpu_offset = fdt_parent_offset(fdt, cpu_intc_offset);
> -???????????????if (cpu_intc_offset < 0)
> +???????????????if (cpu_offset < 0)
> ????????????????????????continue;
> ?
> ????????????????rc = fdt_parse_hart_id(fdt, cpu_offset, &hartid);
> -- 
> 2.37.2
> 
>