From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:55922 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753086AbcEIHhC (ORCPT ); Mon, 9 May 2016 03:37:02 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Williams , Larry Finger , Kalle Valo Subject: [PATCH 4.5 07/88] rtlwifi: Fix size of wireless mode variable Date: Mon, 9 May 2016 09:20:56 +0200 Message-Id: <20160509071952.500624247@linuxfoundation.org> In-Reply-To: <20160509071952.129092535@linuxfoundation.org> References: <20160509071952.129092535@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: stable-owner@vger.kernel.org List-ID: 4.5-stable review patch. If anyone has any objections, please let me know. ------------------ From: Larry Finger commit 73fb270592164b1917442f8bff4c791d095ee2ef upstream. Smatch reports the following warning: CHECK drivers/net/wireless/realtek/rtlwifi/rc.c drivers/net/wireless/realtek/rtlwifi/rc.c:144 _rtl_rc_rate_set_series() warn: impossible condition '(wireless_mode == 256) => (0-255 == 256)' This warning arises because commit acc6907b87a9 ("rtlwifi: Fix warning from ieee80211_get_tx_rates() when using 5G") now checks the wireless mode for WIRELESS_MODE_AC_ONLY (BIT(8)) in _rtl_rc_rate_set_series(). As a result, all quantities used to store the wireless mode must be u16. This patch also reorders struct rtl_sta_info to save a little space. Fixes: d76d65fd2695 ("rtlwifi: fix broken VHT support") Reported-by: Dan Williams Signed-off-by: Larry Finger Signed-off-by: Kalle Valo Signed-off-by: Greg Kroah-Hartman --- drivers/net/wireless/realtek/rtlwifi/rc.c | 4 ++-- drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c | 2 +- drivers/net/wireless/realtek/rtlwifi/wifi.h | 9 ++++----- 3 files changed, 7 insertions(+), 8 deletions(-) --- a/drivers/net/wireless/realtek/rtlwifi/rc.c +++ b/drivers/net/wireless/realtek/rtlwifi/rc.c @@ -41,7 +41,7 @@ static u8 _rtl_rc_get_highest_rix(struct struct rtl_hal *rtlhal = rtl_hal(rtlpriv); struct rtl_phy *rtlphy = &(rtlpriv->phy); struct rtl_sta_info *sta_entry = NULL; - u8 wireless_mode = 0; + u16 wireless_mode = 0; /* *this rate is no use for true rate, firmware @@ -99,7 +99,7 @@ static void _rtl_rc_rate_set_series(stru { struct rtl_mac *mac = rtl_mac(rtlpriv); struct rtl_sta_info *sta_entry = NULL; - u8 wireless_mode = 0; + u16 wireless_mode = 0; u8 sgi_20 = 0, sgi_40 = 0, sgi_80 = 0; if (sta) { --- a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c @@ -3855,7 +3855,7 @@ void rtl8821ae_update_channel_access_set { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); - u8 wireless_mode = mac->mode; + u16 wireless_mode = mac->mode; u8 sifs_timer, r2t_sifs; rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_SLOT_TIME, --- a/drivers/net/wireless/realtek/rtlwifi/wifi.h +++ b/drivers/net/wireless/realtek/rtlwifi/wifi.h @@ -1323,14 +1323,13 @@ struct rtl_tid_data { struct rtl_sta_info { struct list_head list; - u8 ratr_index; - u8 wireless_mode; - u8 mimo_ps; - u8 mac_addr[ETH_ALEN]; struct rtl_tid_data tids[MAX_TID_COUNT]; - /* just used for ap adhoc or mesh*/ struct rssi_sta rssi_stat; + u16 wireless_mode; + u8 ratr_index; + u8 mimo_ps; + u8 mac_addr[ETH_ALEN]; } __packed; struct rtl_priv;