Re: [PATCH] KVM: s390: use ARRAY_SIZE instead of division operation

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On Sat, Feb 20, 2021 at 04:22:37PM +0800, Yang Li wrote:
> This eliminates the following coccicheck warning:
> ./arch/s390/tools/gen_facilities.c:154:37-38: WARNING: Use ARRAY_SIZE
> ./arch/s390/tools/gen_opcode_table.c:141:39-40: WARNING: Use ARRAY_SIZE
> 
> Reported-by: Abaci Robot <abaci@xxxxxxxxxxxxxxxxx>
> Signed-off-by: Yang Li <yang.lee@xxxxxxxxxxxxxxxxx>
> ---
>  arch/s390/tools/gen_facilities.c   | 2 +-
>  arch/s390/tools/gen_opcode_table.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/s390/tools/gen_facilities.c b/arch/s390/tools/gen_facilities.c
> index 61ce5b5..5366817 100644
> --- a/arch/s390/tools/gen_facilities.c
> +++ b/arch/s390/tools/gen_facilities.c
> @@ -151,7 +151,7 @@ static void print_facility_lists(void)
>  {
>  	unsigned int i;
>  
> -	for (i = 0; i < sizeof(facility_defs) / sizeof(facility_defs[0]); i++)
> +	for (i = 0; i < ARRAY_SIZE(facility_defs); i++)
>  		print_facility_list(&facility_defs[i]);
>  }
>  
> diff --git a/arch/s390/tools/gen_opcode_table.c b/arch/s390/tools/gen_opcode_table.c
> index a1bc02b..468b70c 100644
> --- a/arch/s390/tools/gen_opcode_table.c
> +++ b/arch/s390/tools/gen_opcode_table.c
> @@ -138,7 +138,7 @@ static struct insn_type *insn_format_to_type(char *format)
>  	strcpy(tmp, format);
>  	base_format = tmp;
>  	base_format = strsep(&base_format, "_");
> -	for (i = 0; i < sizeof(insn_type_table) / sizeof(insn_type_table[0]); i++) {
> +	for (i = 0; i < ARRAY_SIZE(insn_type_table); i++) {

There is a reason why this doesn't use ARRAY_SIZE()...
Please stop sending trivial patches without even looking at the code.



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