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-rw-r--r--include/linux/ctype.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/ctype.h b/include/linux/ctype.h
index a3d6ee0044f..8acfe312f94 100644
--- a/include/linux/ctype.h
+++ b/include/linux/ctype.h
@@ -52,4 +52,13 @@ 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