From 64e79426c2041b931c053a11743277a4f7f279c4 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 29 Sep 2017 10:52:34 +0300 Subject: rtlwifi: silence underflow warning My static checker complains that we have an upper bound but no lower bound. I suspect neither are really required but it doesn't hurt to add a check for negatives. Signed-off-by: Dan Carpenter Signed-off-by: Kalle Valo --- drivers/net/wireless/realtek/rtlwifi/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/wireless/realtek/rtlwifi/core.c b/drivers/net/wireless/realtek/rtlwifi/core.c index c53cbf3d52bd..294a6b43d1bc 100644 --- a/drivers/net/wireless/realtek/rtlwifi/core.c +++ b/drivers/net/wireless/realtek/rtlwifi/core.c @@ -453,7 +453,8 @@ static void _rtl_add_wowlan_patterns(struct ieee80211_hw *hw, for (i = 0; i < wow->n_patterns; i++) { memset(&rtl_pattern, 0, sizeof(struct rtl_wow_pattern)); memset(mask, 0, MAX_WOL_BIT_MASK_SIZE); - if (patterns[i].pattern_len > MAX_WOL_PATTERN_SIZE) { + if (patterns[i].pattern_len < 0 || + patterns[i].pattern_len > MAX_WOL_PATTERN_SIZE) { RT_TRACE(rtlpriv, COMP_POWER, DBG_WARNING, "Pattern[%d] is too long\n", i); continue; -- cgit v1.2.3