From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-eopbgr710116.outbound.protection.outlook.com ([40.107.71.116]:59328 "EHLO NAM05-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727664AbeIQI1x (ORCPT ); Mon, 17 Sep 2018 04:27:53 -0400 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Stefan Agner , Tobias Regnery , Kalle Valo , Sasha Levin Subject: [PATCH AUTOSEL 4.18 093/136] brcmsmac: fix wrap around in conversion from constant to s16 Date: Mon, 17 Sep 2018 03:01:10 +0000 Message-ID: <20180917030006.245495-93-alexander.levin@microsoft.com> References: <20180917030006.245495-1-alexander.levin@microsoft.com> In-Reply-To: <20180917030006.245495-1-alexander.levin@microsoft.com> Content-Language: en-US Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org List-ID: From: Stefan Agner [ Upstream commit c9a61469fc97672a08b2f798830a55ea6e03dc4a ] The last value in the log_table wraps around to a negative value since s16 has a value range of -32768 to 32767. This is not what the table intends to represent. Use the closest positive value 32767. This fixes a warning seen with clang: drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_qmath.c:216:2: war= ning: implicit conversion from 'int' to 's16' (aka 'short') changes value from 32768 to -32768 [-Wconstant-conversion] 32768 ^~~~~ 1 warning generated. Fixes: 4c0bfeaae9f9 ("brcmsmac: fix array out-of-bounds access in qm_log10"= ) Cc: Tobias Regnery Signed-off-by: Stefan Agner Signed-off-by: Kalle Valo Signed-off-by: Sasha Levin --- .../net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_qmath.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_qmath= .c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_qmath.c index b9672da24a9d..b24bc57ca91b 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_qmath.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_qmath.c @@ -213,7 +213,7 @@ static const s16 log_table[] =3D { 30498, 31267, 32024, - 32768 + 32767 }; =20 #define LOG_TABLE_SIZE 32 /* log_table size */ --=20 2.17.1