staging: rtl8192e: use %*pEn to escape buffer

Let's use kernel's native specifier to escape a buffer.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: "John W . Linville" <linville@tuxdriver.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/staging/rtl8192e/rtllib.h b/drivers/staging/rtl8192e/rtllib.h
index 91d35df..2d82f89 100644 (file)
--- a/drivers/staging/rtl8192e/rtllib.h
+++ b/drivers/staging/rtl8192e/rtllib.h
@@ -2957,25 +2957,13 @@ extern inline int rtllib_get_scans(struct rtllib_device *ieee)
 static inline const char *escape_essid(const char *essid, u8 essid_len)
 {
        static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
-       const char *s = essid;
-       char *d = escaped;
 
        if (rtllib_is_empty_essid(essid, essid_len)) {
                memcpy(escaped, "<hidden>", sizeof("<hidden>"));
                return escaped;
        }
 
-       essid_len = min(essid_len, (u8)IW_ESSID_MAX_SIZE);
-       while (essid_len--) {
-               if (*s == '\0') {
-                       *d++ = '\\';
-                       *d++ = '0';
-                       s++;
-               } else {
-                       *d++ = *s++;
-               }
-       }
-       *d = '\0';
+       snprintf(escaped, sizeof(escaped), "%*pEn", essid_len, essid);
        return escaped;
 }