Re: [PATCH] bpf: fix check against plain integer v 'NULL'

[Yonghong Song]

On 7/14/22 3:03 AM, Ben Dooks wrote:
> When checking with sparse, btf_show_type_value() is causing a
> warning about checking integer vs NULL when the macro is passed
> a pointer, due to the 'value != 0' check. Stop sparse complaining
> about any type-casting by adding a cast to the typeof(value).
>
> This fixes the following sparse warnings:
>
> kernel/bpf/btf.c:2579:17: warning: Using plain integer as NULL pointer
> kernel/bpf/btf.c:2581:17: warning: Using plain integer as NULL pointer
> kernel/bpf/btf.c:3407:17: warning: Using plain integer as NULL pointer
> kernel/bpf/btf.c:3758:9: warning: Using plain integer as NULL pointer
>
> Signed-off-by: Ben Dooks <ben.dooks@xxxxxxxxxx>

Acked-by: Yonghong Song <yhs@xxxxxx>