staging: rtl8192u: 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>

1 files changed, 1 insertions, 13 deletions

diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211.h b/drivers/staging/rtl8192u/ieee80211/ieee80211.h
index 9ecfa4a2421d..b44aa17d30a7 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211.h
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211.h
@@ -2593,25 +2593,13 @@ static inline int ieee80211_get_scans(struct ieee80211_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 (ieee80211_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;
 }