From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932437AbcFBKx3 (ORCPT ); Thu, 2 Jun 2016 06:53:29 -0400 Received: from mail-pa0-f47.google.com ([209.85.220.47]:36120 "EHLO mail-pa0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753157AbcFBKx1 (ORCPT ); Thu, 2 Jun 2016 06:53:27 -0400 From: Binoy Jayan To: Greg Kroah-Hartman , devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org Cc: Arnd Bergmann , Binoy Jayan Subject: [PATCH v2 3/4] rtl8192u: Replace semaphore scan_sem with mutex Date: Thu, 2 Jun 2016 16:23:01 +0530 Message-Id: <1464864782-424-4-git-send-email-binoy.jayan@linaro.org> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1464864782-424-1-git-send-email-binoy.jayan@linaro.org> References: <1464843475-4870-1-git-send-email-binoy.jayan@linaro.org> <1464864782-424-1-git-send-email-binoy.jayan@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The semaphore 'scan_sem' in rtl8192u is a simple mutex, so it should be written as one. Semaphores are going away in the future. Signed-off-by: Binoy Jayan --- This patch depends on the following patch: rtl8192u: ieee80211_device: Replace semaphore wx_sem with mutex drivers/staging/rtl8192u/ieee80211/ieee80211.h | 2 +- drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c | 18 +++++++++--------- 2 files changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211.h b/drivers/staging/rtl8192u/ieee80211/ieee80211.h index ef9ae22..09e9499 100644 --- a/drivers/staging/rtl8192u/ieee80211/ieee80211.h +++ b/drivers/staging/rtl8192u/ieee80211/ieee80211.h @@ -1800,7 +1800,7 @@ struct ieee80211_device { short proto_started; struct mutex wx_mutex; - struct semaphore scan_sem; + struct mutex scan_mutex; spinlock_t mgmt_tx_lock; spinlock_t beacon_lock; diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c index c983e49..e8e83f5 100644 --- a/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c +++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c @@ -427,7 +427,7 @@ void ieee80211_softmac_scan_syncro(struct ieee80211_device *ieee) short ch = 0; u8 channel_map[MAX_CHANNEL_NUMBER+1]; memcpy(channel_map, GET_DOT11D_INFO(ieee)->channel_map, MAX_CHANNEL_NUMBER+1); - down(&ieee->scan_sem); + mutex_lock(&ieee->scan_mutex); while(1) { @@ -475,13 +475,13 @@ void ieee80211_softmac_scan_syncro(struct ieee80211_device *ieee) out: if(ieee->state < IEEE80211_LINKED){ ieee->actscanning = false; - up(&ieee->scan_sem); + mutex_unlock(&ieee->scan_mutex); } else{ ieee->sync_scan_hurryup = 0; if(IS_DOT11D_ENABLE(ieee)) DOT11D_ScanComplete(ieee); - up(&ieee->scan_sem); + mutex_unlock(&ieee->scan_mutex); } } EXPORT_SYMBOL(ieee80211_softmac_scan_syncro); @@ -495,7 +495,7 @@ static void ieee80211_softmac_scan_wq(struct work_struct *work) memcpy(channel_map, GET_DOT11D_INFO(ieee)->channel_map, MAX_CHANNEL_NUMBER+1); if(!ieee->ieee_up) return; - down(&ieee->scan_sem); + mutex_lock(&ieee->scan_mutex); do{ ieee->current_network.channel = (ieee->current_network.channel + 1) % MAX_CHANNEL_NUMBER; @@ -517,7 +517,7 @@ static void ieee80211_softmac_scan_wq(struct work_struct *work) schedule_delayed_work(&ieee->softmac_scan_wq, IEEE80211_SOFTMAC_SCAN_TIME); - up(&ieee->scan_sem); + mutex_unlock(&ieee->scan_mutex); return; out: if(IS_DOT11D_ENABLE(ieee)) @@ -525,7 +525,7 @@ out: ieee->actscanning = false; watchdog = 0; ieee->scanning = 0; - up(&ieee->scan_sem); + mutex_unlock(&ieee->scan_mutex); } @@ -579,7 +579,7 @@ static void ieee80211_softmac_stop_scan(struct ieee80211_device *ieee) //ieee->sync_scan_hurryup = 1; - down(&ieee->scan_sem); + mutex_lock(&ieee->scan_mutex); // spin_lock_irqsave(&ieee->lock, flags); if (ieee->scanning == 1) { @@ -589,7 +589,7 @@ static void ieee80211_softmac_stop_scan(struct ieee80211_device *ieee) } // spin_unlock_irqrestore(&ieee->lock, flags); - up(&ieee->scan_sem); + mutex_unlock(&ieee->scan_mutex); } void ieee80211_stop_scan(struct ieee80211_device *ieee) @@ -2729,7 +2729,7 @@ void ieee80211_softmac_init(struct ieee80211_device *ieee) mutex_init(&ieee->wx_mutex); - sema_init(&ieee->scan_sem, 1); + mutex_init(&ieee->scan_mutex); spin_lock_init(&ieee->mgmt_tx_lock); spin_lock_init(&ieee->beacon_lock); -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project