Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
---
include/linux/ctype.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/include/linux/ctype.h b/include/linux/ctype.h
index 74fb73577..633c3862d 100644
--- a/include/linux/ctype.h
+++ b/include/linux/ctype.h
@@ -53,4 +53,13 @@ static inline unsigned char __toupper(unsigned char c)
#define tolower(c) __tolower(c)
#define toupper(c) __toupper(c)
+/*
+ * Fast implementation of tolower() for internal usage. Do not use in your
+ * code.
+ */
+static inline char _tolower(const char c)
+{
+ return c | 0x20;
+}
+
#endif
--
2.17.1
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