Re: [Qemu-devel] [PATCH correct] checkpatch: allow space in more places before a bracket

[Markus Armbruster <armbru@redhat.com>]

Paolo Bonzini <pbonzini@redhat.com> writes:

> From: Heinrich Schuchardt <xypron.glpk@gmx.de>
>
> Allow a space between a colon and subsequent opening bracket.  This
> sequence may occur in inline assembler statements like
>
> 	asm(
> 		"ldr %[out], [%[in]]\n\t"
> 		: [out] "=r" (ret)
> 		: [in] "r" (addr)
> 	);
>
> Allow a space between a comma and subsequent opening bracket.  This
> sequence may occur in designated initializers.
>
> To ease backporting the patch, I am also changing the comma-bracket
> detection (added in QEMU by commit 409db6eb7199af7a2f09f746bd1b793e9daefe5f)
> to use the same regex as brackets and colons (as done independently
> by Linux commit daebc534ac15f991961a5bb433e515988220e9bf).
>
> Link: http://lkml.kernel.org/r/20180403191655.23700-1-xypron.glpk@gmx.de
> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
> Acked-by: Joe Perches <joe@perches.com>
> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
>  scripts/checkpatch.pl | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 52ab18bfce..33b5771120 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -1977,9 +1977,8 @@ sub process {
>  			my ($where, $prefix) = ($-[1], $1);
>  			if ($prefix !~ /$Type\s+$/ &&
>  			    ($where != 0 || $prefix !~ /^.\s+$/) &&
> -			    $prefix !~ /{\s+$/ &&
>  			    $prefix !~ /\#\s*define[^(]*\([^)]*\)\s+$/ &&
> -			    $prefix !~ /,\s+$/) {
> +			    $prefix !~ /[,{:]\s+$/) {
>  				ERROR("space prohibited before open square bracket '['\n" . $herecurr);
>  			}
>  		}

Reviewed-by: Markus Armbruster <armbru@redhat.com>