scripts/get_maintainer.pl: handle file names beginning with ./

The problem is that get_maintainer.pl doesn't work if you have a ./
prefix on the filename.  For example, if you type:

  ./scripts/get_maintainer.pl -f ./drivers/usb/usb-skeleton.c

then the current code only includes LKML and people from the git log, it
doesn't include Greg or the linux-usb list.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index cab641a12dd5..1873421f2305 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -16,7 +16,9 @@ my $P = $0;
 my $V = '0.26';
 
 use Getopt::Long qw(:config no_auto_abbrev);
+use Cwd;
 
+my $cur_path = fastgetcwd() . '/';
 my $lk_path = "./";
 my $email = 1;
 my $email_usename = 1;
@@ -429,6 +431,8 @@ foreach my $file (@ARGV) {
         }
     }
     if ($from_filename) {
+        $file =~ s/^\Q${cur_path}\E//;  #strip any absolute path
+        $file =~ s/^\Q${lk_path}\E//;   #or the path to the lk tree
         push(@files, $file);
         if ($file ne "MAINTAINERS" && -f $file && ($keywords || $file_emails)) {
             open(my $f, '<', $file)