From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934391AbaJ2QJA (ORCPT ); Wed, 29 Oct 2014 12:09:00 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:45718 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933873AbaJ2QI6 (ORCPT ); Wed, 29 Oct 2014 12:08:58 -0400 Date: Wed, 29 Oct 2014 19:08:27 +0300 From: Dan Carpenter To: Johannes Berg Cc: Emmanuel Grumbach , Intel Linux Wireless , "John W. Linville" , Paul Gortmaker , Larry Finger , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [patch] iwlwifi: cleanup a mask shift in iwlagn_bt_traffic_is_sco() Message-ID: <20141029160827.GD5290@mwanda> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) X-Source-IP: acsinet21.oracle.com [141.146.126.237] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The shift operation is higher precedence so the code is wrong and it sets of a static checker warning. But it doesn't affect real life because BT_UART_MSG_FRAME3SCOESCO_POS is zero so the shift is a no-op. I have re-written it in normal style and with parenthesis as a cleanup and to silence the static checker warning. Signed-off-by: Dan Carpenter diff --git a/drivers/net/wireless/iwlwifi/dvm/lib.c b/drivers/net/wireless/iwlwifi/dvm/lib.c index 2191621..065d3d5 100644 --- a/drivers/net/wireless/iwlwifi/dvm/lib.c +++ b/drivers/net/wireless/iwlwifi/dvm/lib.c @@ -418,7 +418,7 @@ void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena) static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg) { - return BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3 >> + return (uart_msg->frame3 & BT_UART_MSG_FRAME3SCOESCO_MSK) >> BT_UART_MSG_FRAME3SCOESCO_POS; }