The patch titled
checkpatch: Add warning for p0-patches
has been added to the -mm tree. Its filename is
checkpatch-add-warning-for-p0-patches.patch
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The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: checkpatch: Add warning for p0-patches
From: Wolfram Sang <w.sang@xxxxxxxxxxxxxx>
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@xxxxxxxxxxxxx: update message language, handle null prefix, add tests]
Signed-off-by: Wolfram Sang <w.sang@xxxxxxxxxxxxxx>
Signed-off-by: Andy Whitcroft <apw@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
scripts/checkpatch.pl | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff -puN scripts/checkpatch.pl~checkpatch-add-warning-for-p0-patches scripts/checkpatch.pl
--- a/scripts/checkpatch.pl~checkpatch-add-warning-for-p0-patches
+++ a/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");
_
Patches currently in -mm which might be from w.sang@xxxxxxxxxxxxxx are
linux-next.patch
checkpatch-add-warning-for-p0-patches.patch
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