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 Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this 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 -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html