linux-kernel - Re: [PATCH 1/2] staging: rtl8188eu: use __func_

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Date:   Thu, 17 Sep 2020 02:25:31 -0700
From:   Joe Perches <joe@...ches.com>
To:     Michael Straube <straube.linux@...il.com>,
        gregkh@...uxfoundation.org
Cc:     Larry.Finger@...inger.net, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] staging: rtl8188eu: use __func__ in hal directory

On Thu, 2020-09-17 at 09:13 +0200, Michael Straube wrote:
> Use __func__ instead of hardcoded function names to clear
> checkpatch warnings.
[]
> diff --git a/drivers/staging/rtl8188eu/hal/odm.c b/drivers/staging/rtl8188eu/hal/odm.c
[]
> @@ -249,7 +249,7 @@ void odm_CommonInfoSelfUpdate(struct odm_dm_struct *pDM_Odm)
>  
>  void odm_CmnInfoInit_Debug(struct odm_dm_struct *pDM_Odm)
>  {
> -	ODM_RT_TRACE(pDM_Odm, ODM_COMP_COMMON, ODM_DBG_LOUD, ("odm_CmnInfoInit_Debug==>\n"));
> +	ODM_RT_TRACE(pDM_Odm, ODM_COMP_COMMON, ODM_DBG_LOUD, ("%s==>\n", __func__));
>  	ODM_RT_TRACE(pDM_Odm, ODM_COMP_COMMON, ODM_DBG_LOUD, ("SupportPlatform=%d\n", pDM_Odm->SupportPlatform));
>  	ODM_RT_TRACE(pDM_Odm, ODM_COMP_COMMON, ODM_DBG_LOUD, ("SupportAbility=0x%x\n", pDM_Odm->SupportAbility));
>  	ODM_RT_TRACE(pDM_Odm, ODM_COMP_COMMON, ODM_DBG_LOUD, ("SupportInterface=%d\n", pDM_Odm->SupportInterface));

These ODM_RT_TRACE macro uses are rather ugly.
Perhaps a rename to odm_dbg would be better.
So would removing the unnecessary parentheses from
the macro uses and fixing the macro definition

Maybe using a perl script something like the below:

our $balanced_parens = qr/(\((?:[^\(\)]++|(?-1))*\))/;

sub deparenthesize {
	my ($string) = @_;
	return "" if (!defined($string));

	while ($string =~ /^\s*\(.*\)\s*$/s) {
		$string =~ s@^\s*\(\s*@@s;
		$string =~ s@\s*\)\s*$@@s;
	}

	return $string;
}

foreach my $file (@ARGV) {
    my $FILE;
    my $count;
    open($FILE, '<', $file) or die("Can't read $file $!\n");
    undef $/;
    my $text = (<$FILE>);
    close($FILE);
    $count = $text =~ s/ODM_RT_TRACE\s*\(\s*([^,]*),\s*ODM_COMP_(\w+)\s*,\s*ODM_DBG_(\w+)\s*,\s*($balanced_parens)\s*\)\s*;/"odm_dbg($1, $2, $3, " . deparenthesize($4) . ");"/ge;
    if ($count > 0) {
	open($FILE, '>', $file) or die("Can't write $file $!\n");
	print $FILE $text;
	close($FILE);
    }
}