From 1e85572697b348b1a126520349a29654f2ae6a12 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Tue, 6 Jan 2009 14:41:24 -0800 Subject: [PATCH] checkpatch: Add warning for p0-patches Some people work internally with -p0-patches which has the danger that one forgets to convert them to -p1 before mainlining. Bitten myself and seen p0-patches in mailing lists occasionally, this patch adds a warning to checkpatch.pl in case a patch is -p0. If you really want, you can fool this check to generate false positives, this is why it just spits a warning. Making the check 100% proof is trickier than it looks, so let's start with a version which catches the cases of real use. [apw@canonical.com: update message language, handle null prefix, add tests] Signed-off-by: Wolfram Sang Signed-off-by: Andy Whitcroft Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- scripts/checkpatch.pl | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index f0156984796..b953c76be36 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -1057,6 +1057,7 @@ sub process { my $in_comment = 0; my $comment_edge = 0; my $first_line = 0; + my $p1_prefix = ''; my $prev_values = 'E'; @@ -1205,7 +1206,12 @@ sub process { # extract the filename as it passes if ($line=~/^\+\+\+\s+(\S+)/) { $realfile = $1; - $realfile =~ s@^[^/]*/@@; + $realfile =~ s@^([^/]*)/@@; + + $p1_prefix = $1; + if ($tree && $p1_prefix ne '' && -e "$root/$p1_prefix") { + WARN("patch prefix '$p1_prefix' exists, appears to be a -p0 patch\n"); + } if ($realfile =~ m@^include/asm/@) { ERROR("do not modify files in include/asm, change architecture specific files in include/asm-\n" . "$here$rawline\n"); -- 2.11.4.GIT