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

[Xiang W]

在 2022-11-28星期一的 10:14 +0100，Heinrich Schuchardt写道：
> 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 at canonical.com>
Look good to me

Reviewed-by: Xiang W <wxjstz at 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);