linux-kernel - Re: [PATCH v1 1/1] device property: Replace custom implementation of COUNT

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Date:   Wed, 20 Sep 2023 17:45:48 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Scally <djrscally@...il.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Richard Fitzgerald <rf@...nsource.cirrus.com>, tiwai@...e.com,
        llvm@...ts.linux.dev, alsa-devel@...a-project.org,
        Nick Desaulniers <ndesaulniers@...gle.com>
Subject: Re: [PATCH v1 1/1] device property: Replace custom implementation of COUNT_ARGS()

On Wed, 20 Sep 2023 17:38:19 +0200,
Andy Shevchenko wrote:
> 
> Replace custom and non-portable implementation of COUNT_ARGS().
> 
> Fixes: e64b674bc9d7 ("software node: implement reference properties")
> Reported-by: Nick Desaulniers <ndesaulniers@...gle.com>
> Closes: https://lore.kernel.org/r/ZQoILN6QCjzosCOs@google.com
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  include/linux/property.h | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/include/linux/property.h b/include/linux/property.h
> index 1684fca930f7..55c2692ffa8c 100644
> --- a/include/linux/property.h
> +++ b/include/linux/property.h
> @@ -10,6 +10,7 @@
>  #ifndef _LINUX_PROPERTY_H_
>  #define _LINUX_PROPERTY_H_
>  
> +#include <linux/args.h>
>  #include <linux/bits.h>
>  #include <linux/fwnode.h>
>  #include <linux/stddef.h>
> @@ -314,7 +315,7 @@ struct software_node_ref_args {
>  #define SOFTWARE_NODE_REFERENCE(_ref_, ...)			\
>  (const struct software_node_ref_args) {				\
>  	.node = _ref_,						\
> -	.nargs = ARRAY_SIZE(((u64[]){ 0, ##__VA_ARGS__ })) - 1,	\
> +	.nargs = COUNT_ARGS(__VA_ARGS__),			\
>  	.args = { __VA_ARGS__ },				\
>  }
>  

Reviewed-by: Takashi Iwai <tiwai@...e.de>

NR_FWNODE_REFERENCE_ARGS is 8, so the COUNT_ARGS() macro should
suffice.


thanks,

Takashi