linux-kernel - Re: [PATCH v2 6/6] lib/vsprintf: Add %pfw conversion specifier for printing fwnode names

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Date:   Tue, 26 Mar 2019 13:18:09 -0700
From:   Joe Perches <joe@...ches.com>
To:     Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Petr Mladek <pmladek@...e.com>, linux-kernel@...r.kernel.org,
        rafael@...nel.org
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-acpi@...r.kernel.org, devicetree@...r.kernel.org,
        Rob Herring <robh@...nel.org>
Subject: Re: [PATCH v2 6/6] lib/vsprintf: Add %pfw conversion specifier for
 printing fwnode names

On Tue, 2019-03-26 at 14:41 +0200, Sakari Ailus wrote:
> Add support for %pfw conversion specifier (with "f" and "P" modifiers) to
> support printing full path of the node, including its name ("f") and only
> the node's name ("P") in the printk family of functions. The two flags
> have equivalent functionality to existing %pOF with the same two modifiers
> ("f" and "P") on OF based systems. The ability to do the same on ACPI
> based systems is added by this patch.
[]
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
[]
> @@ -5977,7 +5977,8 @@ sub process {
>  				while ($fmt =~ /(\%[\*\d\.]*p(\w))/g) {
>  					$specifier = $1;
>  					$extension = $2;
> -					if ($extension !~ /[SsBKRraEhMmIiUDdgVCbGNOx]/) {
> +					if ($extension !~ /[SsBKRraEhMmIiUDdgVCbGNOxf]/ ||
> +					    $extension =~ /f[^w]/) {
>  						$bad_specifier = $specifier;
>  						last;
>  					}

You also need to remove the bit about using %pF or %pf below this

					if ($bad_specifier =~ /p[Ff]/) {
						$ext_type = "Deprecated";
						$use = " - use %pS instead";
						$use =~ s/pS/ps/ if ($bad_specifier =~ /pf/);
					}