Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

[pandora-kernel.git] / lib / vsprintf.c

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 38e612e..abbabec 100644 (file)
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -17,7 +17,7 @@
  */
 
 #include <stdarg.h>
-#include <linux/module.h>
+#include <linux/module.h>      /* for KSYM_SYMBOL_LEN */
 #include <linux/types.h>
 #include <linux/string.h>
 #include <linux/ctype.h>
@@ -212,6 +212,26 @@ char *put_dec(char *buf, unsigned long long num)
        }
 }
 
+/*
+ * Convert passed number to decimal string.
+ * Returns the length of string.  On buffer overflow, returns 0.
+ *
+ * If speed is not important, use snprintf(). It's easy to read the code.
+ */
+int num_to_str(char *buf, int size, unsigned long long num)
+{
+       char tmp[21];           /* Enough for 2^64 in decimal */
+       int idx, len;
+
+       len = put_dec(tmp, num) - tmp;
+
+       if (len > size)
+               return 0;
+       for (idx = 0; idx < len; ++idx)
+               buf[idx] = tmp[len - idx - 1];
+       return  len;
+}
+
 #define ZEROPAD        1               /* pad with zero */
 #define SIGN   2               /* unsigned/signed long */
 #define PLUS   4               /* show plus */