linux-kernel - Re: [PATCH v1 2/3] lib/vsprintf: Replace custom spec to print decimals with generic one

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Date:   Fri, 31 Jul 2020 11:15:10 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        linux-kernel@...r.kernel.org,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Pantelis Antoniou <pantelis.antoniou@...sulko.com>,
        Joe Perches <joe@...ches.com>, Rob Herring <robh@...nel.org>,
        Grant Likely <grant.likely@....com>
Subject: Re: [PATCH v1 2/3] lib/vsprintf: Replace custom spec to print
 decimals with generic one

On Fri, 31 Jul 2020 15:31:44 +0300
Andy Shevchenko <andriy.shevchenko@...ux.intel.com> wrote:

> When printing phandle in %pOF the custom spec is used. First of all,
> it has SMALL flag which makes no sense for decimal numbers. Second,
> we have already default spec for decimal numbers. Use the latter in
> %pOF case as well.

The change log threw me off, as this is specifically for %pOFp. This
only affects the phandle ('p') portion. Please update the change log to
reflect that.

Also, I would add in Cc those that added this code and looked it over:

Cc: Pantelis Antoniou <pantelis.antoniou@...sulko.com>
Cc: Joe Perches <joe@...ches.com>
Cc: Rob Herring <robh@...nel.org>

And mentioned in that code's change log:

Cc: Grant Likely <grant.likely@....com>


Otherwise,

Reviewed-by: Steven Rostedt (VMware) <rostedt@...dmis.org>

-- Steve



> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  lib/vsprintf.c | 8 +-------
>  1 file changed, 1 insertion(+), 7 deletions(-)
> 
> diff --git a/lib/vsprintf.c b/lib/vsprintf.c
> index 8a8ac7ce0289..90d818ef03c5 100644
> --- a/lib/vsprintf.c
> +++ b/lib/vsprintf.c
> @@ -1979,12 +1979,6 @@ char *device_node_string(char *buf, char *end, struct device_node *dn,
>  	char *buf_start = buf;
>  	struct property *prop;
>  	bool has_mult, pass;
> -	static const struct printf_spec num_spec = {
> -		.flags = SMALL,
> -		.field_width = -1,
> -		.precision = -1,
> -		.base = 10,
> -	};
>  
>  	struct printf_spec str_spec = spec;
>  	str_spec.field_width = -1;
> @@ -2024,7 +2018,7 @@ char *device_node_string(char *buf, char *end, struct device_node *dn,
>  			str_spec.precision = precision;
>  			break;
>  		case 'p':	/* phandle */
> -			buf = number(buf, end, (unsigned int)dn->phandle, num_spec);
> +			buf = number(buf, end, (unsigned int)dn->phandle, default_dec_spec);
>  			break;
>  		case 'P':	/* path-spec */
>  			p = fwnode_get_name(of_fwnode_handle(dn));