[PATCH] checkpatch: remove %p4cn

[Joe Perches]

On Tue, 2025-04-29 at 16:07 +0000, Aditya Garg wrote:
> %p4cn was recently removed and replaced by %p4chR in vsprintf. So,
> remove the check for %p4cn from checkpatch.pl.
> 
> Fixes: 37eed892cc5f ("vsprintf: Use %p4chR instead of %p4cn for reading data in reversed host ordering")
> 
> Signed-off-by: Aditya Garg <gargaditya08 at live.com>
> ---
>  scripts/checkpatch.pl | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 44e233b6f..f79f0a085 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -6891,7 +6891,7 @@ sub process {
>  					    ($extension eq "f" &&
>  					     defined $qualifier && $qualifier !~ /^w/) ||
>  					    ($extension eq "4" &&
> -					     defined $qualifier && $qualifier !~ /^c[hnlbc]/)) {
> +					     defined $qualifier && $qualifier !~ /^c[hlbc]/)) {

Probably needs to be something like:

					$qualifier !~ /^c(?:[hlbc]|cR)$/

>  						$bad_specifier = $specifier;
>  						last;
>  					}