linux-kernel - false negative in checpatch for asm/ vs. linux/

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Message-ID: <20080429164918.GB24967@us.ibm.com>
Date:	Tue, 29 Apr 2008 09:49:18 -0700
From:	Nishanth Aravamudan <nacc@...ibm.com>
To:	apw@...dowen.org
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: false negative in checpatch for asm/ vs. linux/

Hi Andy,

I think the following:

#warn if <asm/foo.h> is #included and <linux/foo.h> is available (uses RAW line)
                if ($tree && $rawline =~ m{^.\#\s*include\s*\<asm\/(.*)\.h\>}) {
                        my $checkfile = "$root/include/linux/$1.h";
                        if (-f $checkfile && $1 ne 'irq') {
                                WARN("Use #include <linux/$1.h> instead of <asm/$1.h>\n" .
                                        $herecurr);
                        }
                }

in checkpatch.pl can lead to false positives for asm/ includes from within
linux/ files? e.g., I have a patch which moves the asm/hugetlb.h #include up to
the top of include/linux/hugetlb.h, but I get:

[09:46:27]nacc@...anoid:~/linux/views/linux-2.6-work$ git show HEAD | ./scripts/checkpatch.pl -
WARNING: Use #include <linux/hugetlb.h> instead of <asm/hugetlb.h>
#17: FILE: include/linux/hugetlb.h:8:
+#include <asm/hugetlb.h>

Thanks,
Nish

-- 
Nishanth Aravamudan <nacc@...ibm.com>
IBM Linux Technology Center
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