[PATCH][next] ASoC: Intel: Skylake: Replace zero-length arrays with DECLARE_FLEX_ARRAY() helper

[Amadeusz Sławiński]

On 9/27/2022 12:58 AM, Gustavo A. R. Silva wrote:
> Zero-length arrays are deprecated and we are moving towards adopting
> C99 flexible-array members, instead. So, replace zero-length arrays
> declarations in anonymous union with the new DECLARE_FLEX_ARRAY()
> helper macro.
> 
> This helper allows for flexible-array members in unions.
> 
> Link: https://github.com/KSPP/linux/issues/193
> Link: https://github.com/KSPP/linux/issues/226
> Link: https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
> Signed-off-by: Gustavo A. R. Silva <gustavoars at kernel.org>
> ---
>   sound/soc/intel/skylake/skl-topology.h | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/sound/soc/intel/skylake/skl-topology.h b/sound/soc/intel/skylake/skl-topology.h
> index a5bccf2fcd88..017ac0ef324d 100644
> --- a/sound/soc/intel/skylake/skl-topology.h
> +++ b/sound/soc/intel/skylake/skl-topology.h
> @@ -233,8 +233,8 @@ struct skl_uuid_inst_map {
>   struct skl_kpb_params {
>   	u32 num_modules;
>   	union {
> -		struct skl_mod_inst_map map[0];
> -		struct skl_uuid_inst_map map_uuid[0];
> +		DECLARE_FLEX_ARRAY(struct skl_mod_inst_map, map);
> +		DECLARE_FLEX_ARRAY(struct skl_uuid_inst_map, map_uuid);
>   	} u;
>   };
>   

Reviewed-by: Amadeusz Sławiński <amadeuszx.slawinski at linux.intel.com>