Subject: Re: [PATCH net-next] pps: bump PPS device count

From: Jakub Kicinski <[email-masked]>
Date: Mon, 18 May 2026 16:22:50 -0700

On Fri, 15 May 2026 13:50:28 +0000 Vadim Fedorenko wrote:
> Modern systems may have more than 16 PPS sources and current hard-coded
> limit breaks registration of some devices. Let's bump the limit to 256
> in hope it will be enough in foreseen future.
> 
> Signed-off-by: Vadim Fedorenko <[email-masked]>

Hi Rodolfo! Could you TAL / ack?
Or perhaps you have a tree via which you'll route this?

> diff --git a/include/uapi/linux/pps.h b/include/uapi/linux/pps.h
> index 009ebcd8ced5..1088dea65e12 100644
> --- a/include/uapi/linux/pps.h
> +++ b/include/uapi/linux/pps.h
> @@ -26,7 +26,7 @@
>  #include <linux/types.h>
>  
>  #define PPS_VERSION		"5.3.6"
> -#define PPS_MAX_SOURCES		16		/* should be enough... */
> +#define PPS_MAX_SOURCES		256		/* should be enough... */
>  
>  /* Implementation note: the logical states ``assert'' and ``clear''
>   * are implemented in terms of the chip register, i.e. ``assert''