With a compatible string like

compatible = "foo";

checkpatch will currently try to find "foo" in  vendor-prefixes.txt,
which is wrong since the vendor prefix is empty in this specific case.

Skip the vendor test if the compatible is not like

compatible = "vendor,something";

Signed-off-by: Florian Vaussard <[email protected]>
---
 scripts/checkpatch.pl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index e304e77..7437505 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2058,6 +2058,7 @@ sub process {
                                my $vendor = $compat;
                                my $vendor_path = $dt_path . 
"vendor-prefixes.txt";
                                next if (! -f $vendor_path);
+                               next if not $vendor =~ /^[a-zA-Z0-9\-]+\,.*/;
                                $vendor =~ s/^([a-zA-Z0-9\-]+)\,.*/$1/;
                                `grep -Eq "$vendor" $vendor_path`;
                                if ( $? >> 8 ) {
-- 
1.8.5.3

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