1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/ctype.h b/include/linux/ctype.h
index 8acfe312f947..653589e3e30e 100644
--- a/include/linux/ctype.h
+++ b/include/linux/ctype.h
@@ -61,4 +61,10 @@ static inline char _tolower(const char c)
         return c | 0x20;
 }
 
+/* Fast check for octal digit */
+static inline int isodigit(const char c)
+{
+        return c >= '0' && c <= '7';
+}
+
 #endif