1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index d69699973b58..68699b3e7998 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4014,8 +4014,14 @@ int strn_pattern_cmp(const char *patt, const char *name, int wildchar)
         p = strchr(patt, wildchar);
         if (p && ((*(p + 1)) == 0))
                 len = p - patt;
-        else
+        else {
                 len = strlen(name);
+                if (!len) {
+                        if (!*patt)
+                                return 0;
+                        return -1;
+                }
+        }
 
         return strncmp(patt, name, len);
 }