selinuxfs: remove custom hex_to_bin()

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Eric Paris <eparis@parisplace.org>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Morris <jmorris@namei.org>

diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index f46658722c78d2b798a2d77634a08df968b2d0da..48a7d0014b4f4f5c4f40d92de9cb029bdf149d45 100644 (file)
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -749,14 +749,6 @@ out:
        return length;
 }
 
-static inline int hexcode_to_int(int code) {
-       if (code == '\0' || !isxdigit(code))
-               return -1;
-       if (isdigit(code))
-               return code - '0';
-       return tolower(code) - 'a' + 10;
-}
-
 static ssize_t sel_write_create(struct file *file, char *buf, size_t size)
 {
        char *scon = NULL, *tcon = NULL;
@@ -808,9 +800,11 @@ static ssize_t sel_write_create(struct file *file, char *buf, size_t size)
                        if (c1 == '+')
                                c1 = ' ';
                        else if (c1 == '%') {
-                               if ((c1 = hexcode_to_int(*r++)) < 0)
+                               c1 = hex_to_bin(*r++);
+                               if (c1 < 0)
                                        goto out;
-                               if ((c2 = hexcode_to_int(*r++)) < 0)
+                               c2 = hex_to_bin(*r++);
+                               if (c2 < 0)
                                        goto out;
                                c1 = (c1 << 4) | c2;
                        }