netdev - Re: [PATCH 02/22] s3c: Replace comments with C99 initializers

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Date:   Mon, 28 Mar 2022 14:37:43 +0100
From:   Daniel Thompson <daniel.thompson@...aro.org>
To:     Benjamin Stürz <benni@...erz.xyz>
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Subject: Re: [PATCH 02/22] s3c: Replace comments with C99 initializers

On Sat, Mar 26, 2022 at 05:58:49PM +0100, Benjamin Stürz wrote:
> This replaces comments with C99's designated
> initializers because the kernel supports them now.

I'm a bit puzzled by "because the kernel supports them now". Designated
initializers are not purely a C99 feature... it is also a GNU C extension
to C89. This language feature has been used by the kernel for a very long time
(well over a decade).

On other words it would be much more effective to advocate for the
change by saying "because the code is clearer and easier to read" rather
than "because we can".


> Signed-off-by: Benjamin Stürz <benni@...erz.xyz>
> ---
>  arch/arm/mach-s3c/bast-irq.c | 32 ++++++++++++++++----------------
>  1 file changed, 16 insertions(+), 16 deletions(-)
> 
> diff --git a/arch/arm/mach-s3c/bast-irq.c b/arch/arm/mach-s3c/bast-irq.c
> index d299f124e6dc..bd5471f9973b 100644
> --- a/arch/arm/mach-s3c/bast-irq.c
> +++ b/arch/arm/mach-s3c/bast-irq.c
> @@ -29,22 +29,22 @@
>   * the irq is not implemented
>  */
>  static const unsigned char bast_pc104_irqmasks[] = {
> -	0,   /* 0 */
> -	0,   /* 1 */
> -	0,   /* 2 */
> -	1,   /* 3 */
> -	0,   /* 4 */
> -	2,   /* 5 */
> -	0,   /* 6 */
> -	4,   /* 7 */
> -	0,   /* 8 */
> -	0,   /* 9 */
> -	8,   /* 10 */
> -	0,   /* 11 */
> -	0,   /* 12 */
> -	0,   /* 13 */
> -	0,   /* 14 */
> -	0,   /* 15 */
> +	[0]  = 0,
> +	[1]  = 0,
> +	[2]  = 0,
> +	[3]  = 1,
> +	[4]  = 0,
> +	[5]  = 2,
> +	[6]  = 0,
> +	[7]  = 4,
> +	[8]  = 0,
> +	[9]  = 0,
> +	[10] = 8,
> +	[11] = 0,
> +	[12] = 0,
> +	[13] = 0,
> +	[14] = 0,
> +	[15] = 0,

Shouldn't this just be as follows (in order to match bast_pc104_irqs)?

+static const unsigned char bast_pc104_irqmasks[16] = {
+	[3]  = 1,
+	[5]  = 2,
+	[7]  = 4,
+	[10] = 8,
 };
 
 static const unsigned char bast_pc104_irqs[] = { 3, 5, 7, 10 };


Daniel.