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-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");