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authorWolfram Sang <w.sang@pengutronix.de>2009-01-06 14:41:24 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-06 15:59:16 -0800
commit1e85572697b348b1a126520349a29654f2ae6a12 (patch)
tree1ce7febee025caa781c586090983718fde900c56 /scripts
parent2a5a2c25224e26c5ee491af0dc5d39e4a16f619c (diff)
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 <w.sang@pengutronix.de> Signed-off-by: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/checkpatch.pl8
1 files changed, 7 insertions, 1 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index f01569847969..b953c76be369 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 ($realfile =~ m@^include/asm/@) {
ERROR("do not modify files in include/asm, change architecture specific files in include/asm-<architecture>\n" . "$here$rawline\n");