linux-kernel - [PATCH v3 11/11] staging: rtl8192u: use %*pEn to escape buffer

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Date:	Wed, 20 Aug 2014 12:42:52 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	"John W . Linville" <linville@...driver.com>,
	Johannes Berg <johannes@...solutions.net>,
	devel@...verdev.osuosl.org, linux-wireless@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Joe Perches <joe@...ches.com>
Cc:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v3 11/11] 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@...ux.intel.com>
---
 drivers/staging/rtl8192u/ieee80211/ieee80211.h | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)

diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211.h b/drivers/staging/rtl8192u/ieee80211/ieee80211.h
index c118551..078333b 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211.h
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211.h
@@ -2580,25 +2580,13 @@ 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;
 }
 
-- 
2.1.0

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