linux-kernel - [PATCH 3.10 245/319] brcmsmac: Initialize power in brcms_c_stf_ss_algo_channel

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Message-Id: <1486322541-8206-146-git-send-email-w@1wt.eu>
Date:   Sun,  5 Feb 2017 20:21:07 +0100
From:   Willy Tarreau <w@....eu>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        linux@...ck-us.net
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Kalle Valo <kvalo@...eaurora.org>, Willy Tarreau <w@....eu>
Subject: [PATCH 3.10 245/319] brcmsmac: Initialize power in brcms_c_stf_ss_algo_channel_get()

From: Florian Fainelli <f.fainelli@...il.com>

commit f823a2aa8f4674c095a5413b9e3ba12d82df06f2 upstream.

wlc_phy_txpower_get_current() does a logical OR of power->flags, which
presumes that power.flags was initiliazed earlier by the caller,
unfortunately, this is not the case, so make sure we zero out the struct
tx_power before calling into wlc_phy_txpower_get_current().

Reported-by: coverity (CID 146011)
Fixes: 5b435de0d7868 ("net: wireless: add brcm80211 drivers")
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
Acked-by: Arend van Spriel <arend.vanspriel@...adcom.com>
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
Signed-off-by: Willy Tarreau <w@....eu>
---
 drivers/net/wireless/brcm80211/brcmsmac/stf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/brcm80211/brcmsmac/stf.c b/drivers/net/wireless/brcm80211/brcmsmac/stf.c
index dd91627..0ab865d 100644
--- a/drivers/net/wireless/brcm80211/brcmsmac/stf.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/stf.c
@@ -87,7 +87,7 @@ void
 brcms_c_stf_ss_algo_channel_get(struct brcms_c_info *wlc, u16 *ss_algo_channel,
 			    u16 chanspec)
 {
-	struct tx_power power;
+	struct tx_power power = { };
 	u8 siso_mcs_id, cdd_mcs_id, stbc_mcs_id;
 
 	/* Clear previous settings */
-- 
2.8.0.rc2.1.gbe9624a