Return-path: Received: from mx0a-0016f401.pphosted.com ([67.231.148.174]:47707 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752263AbcKPNJr (ORCPT ); Wed, 16 Nov 2016 08:09:47 -0500 From: Amitkumar Karwar To: CC: Cathy Luo , Nishant Sarmukadam , , , , Xinming Hu , Amitkumar Karwar Subject: [PATCH v3 1/5] mwifiex: don't wait for main_process in shutdown_drv Date: Wed, 16 Nov 2016 18:39:05 +0530 Message-ID: <1479301749-14803-1-git-send-email-akarwar@marvell.com> (sfid-20161116_140951_831508_20F2FDD4) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Xinming Hu main_process is not expected to be running when shutdown_drv function is called. currently we wait for main_process completion in the function. Actually the caller has already made sure main_process is completed by performing below actions. (1) disable interrupts in if_ops->disable_int. (2) set adapter->surprise_removed = true, main_process wont be queued. (3) mwifiex_terminate_workqueue(adapter), wait for workqueue to be completed. This patch removes redundant wait code and takes care of related cleanup. Signed-off-by: Xinming Hu Signed-off-by: Amitkumar Karwar --- v3: a) This patch is introduced in v3. It replaces "[v2,2/5] mwifiex: use spinlock for 'mwifiex_processing' in shutdown_drv" patch. b) "[v2,1/5] mwifiex: remove redundant condition in main process" is dropped in this patch series. --- drivers/net/wireless/marvell/mwifiex/init.c | 19 ++-------- drivers/net/wireless/marvell/mwifiex/main.c | 55 ++++++++++------------------- drivers/net/wireless/marvell/mwifiex/main.h | 5 +-- drivers/net/wireless/marvell/mwifiex/util.c | 15 -------- 4 files changed, 22 insertions(+), 72 deletions(-) diff --git a/drivers/net/wireless/marvell/mwifiex/init.c b/drivers/net/wireless/marvell/mwifiex/init.c index b36cb3f..f581a15 100644 --- a/drivers/net/wireless/marvell/mwifiex/init.c +++ b/drivers/net/wireless/marvell/mwifiex/init.c @@ -656,10 +656,9 @@ void mwifiex_free_priv(struct mwifiex_private *priv) * - Free the adapter * - Notify completion */ -int +void mwifiex_shutdown_drv(struct mwifiex_adapter *adapter) { - int ret = -EINPROGRESS; struct mwifiex_private *priv; s32 i; unsigned long flags; @@ -667,15 +666,7 @@ void mwifiex_free_priv(struct mwifiex_private *priv) /* mwifiex already shutdown */ if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY) - return 0; - - adapter->hw_status = MWIFIEX_HW_STATUS_CLOSING; - /* wait for mwifiex_process to complete */ - if (adapter->mwifiex_processing) { - mwifiex_dbg(adapter, WARN, - "main process is still running\n"); - return ret; - } + return; /* cancel current command */ if (adapter->curr_cmd) { @@ -726,11 +717,7 @@ void mwifiex_free_priv(struct mwifiex_private *priv) mwifiex_adapter_cleanup(adapter); spin_unlock(&adapter->mwifiex_lock); - - /* Notify completion */ - ret = mwifiex_shutdown_fw_complete(adapter); - - return ret; + adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY; } /* diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c index eac44fe..379e084 100644 --- a/drivers/net/wireless/marvell/mwifiex/main.c +++ b/drivers/net/wireless/marvell/mwifiex/main.c @@ -248,15 +248,14 @@ int mwifiex_main_process(struct mwifiex_adapter *adapter) if (adapter->mwifiex_processing || adapter->main_locked) { adapter->more_task_flag = true; spin_unlock_irqrestore(&adapter->main_proc_lock, flags); - goto exit_main_proc; + return 0; } else { adapter->mwifiex_processing = true; spin_unlock_irqrestore(&adapter->main_proc_lock, flags); } process_start: do { - if ((adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) || - (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)) + if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY) break; /* For non-USB interfaces, If we process interrupts first, it @@ -464,9 +463,6 @@ int mwifiex_main_process(struct mwifiex_adapter *adapter) adapter->mwifiex_processing = false; spin_unlock_irqrestore(&adapter->main_proc_lock, flags); -exit_main_proc: - if (adapter->hw_status == MWIFIEX_HW_STATUS_CLOSING) - mwifiex_shutdown_drv(adapter); return ret; } EXPORT_SYMBOL_GPL(mwifiex_main_process); @@ -648,16 +644,14 @@ static void mwifiex_fw_dpc(const struct firmware *firmware, void *context) if (adapter->if_ops.unregister_dev) adapter->if_ops.unregister_dev(adapter); + adapter->surprise_removed = true; + mwifiex_terminate_workqueue(adapter); + if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) { pr_debug("info: %s: shutdown mwifiex\n", __func__); - adapter->init_wait_q_woken = false; - - if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) - wait_event_interruptible(adapter->init_wait_q, - adapter->init_wait_q_woken); + mwifiex_shutdown_drv(adapter); } - adapter->surprise_removed = true; - mwifiex_terminate_workqueue(adapter); + init_failed = true; done: if (adapter->cal_data) { @@ -1402,11 +1396,8 @@ static void mwifiex_main_work_queue(struct work_struct *work) } mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n"); - adapter->init_wait_q_woken = false; - if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) - wait_event_interruptible(adapter->init_wait_q, - adapter->init_wait_q_woken); + mwifiex_shutdown_drv(adapter); if (adapter->if_ops.down_dev) adapter->if_ops.down_dev(adapter); @@ -1512,19 +1503,16 @@ static void mwifiex_main_work_queue(struct work_struct *work) mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__); if (adapter->if_ops.unregister_dev) adapter->if_ops.unregister_dev(adapter); + +err_kmalloc: + adapter->surprise_removed = true; + mwifiex_terminate_workqueue(adapter); if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) { mwifiex_dbg(adapter, ERROR, "info: %s: shutdown mwifiex\n", __func__); - adapter->init_wait_q_woken = false; - - if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) - wait_event_interruptible(adapter->init_wait_q, - adapter->init_wait_q_woken); + mwifiex_shutdown_drv(adapter); } -err_kmalloc: - mwifiex_terminate_workqueue(adapter); - adapter->surprise_removed = true; complete_all(adapter->fw_done); mwifiex_dbg(adapter, INFO, "%s, error\n", __func__); @@ -1684,17 +1672,13 @@ static void mwifiex_probe_of(struct mwifiex_adapter *adapter) pr_debug("info: %s: unregister device\n", __func__); if (adapter->if_ops.unregister_dev) adapter->if_ops.unregister_dev(adapter); - if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) { - pr_debug("info: %s: shutdown mwifiex\n", __func__); - adapter->init_wait_q_woken = false; - - if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) - wait_event_interruptible(adapter->init_wait_q, - adapter->init_wait_q_woken); - } err_registerdev: adapter->surprise_removed = true; mwifiex_terminate_workqueue(adapter); + if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) { + pr_debug("info: %s: shutdown mwifiex\n", __func__); + mwifiex_shutdown_drv(adapter); + } err_kmalloc: mwifiex_free_adapter(adapter); @@ -1744,11 +1728,8 @@ int mwifiex_remove_card(struct mwifiex_adapter *adapter) mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n"); - adapter->init_wait_q_woken = false; - if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS) - wait_event_interruptible(adapter->init_wait_q, - adapter->init_wait_q_woken); + mwifiex_shutdown_drv(adapter); mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n"); if (atomic_read(&adapter->rx_pending) || diff --git a/drivers/net/wireless/marvell/mwifiex/main.h b/drivers/net/wireless/marvell/mwifiex/main.h index 5c9bd94..fd56b5d 100644 --- a/drivers/net/wireless/marvell/mwifiex/main.h +++ b/drivers/net/wireless/marvell/mwifiex/main.h @@ -248,7 +248,6 @@ enum MWIFIEX_HARDWARE_STATUS { MWIFIEX_HW_STATUS_INITIALIZING, MWIFIEX_HW_STATUS_INIT_DONE, MWIFIEX_HW_STATUS_RESET, - MWIFIEX_HW_STATUS_CLOSING, MWIFIEX_HW_STATUS_NOT_READY }; @@ -1041,9 +1040,7 @@ void mwifiex_wake_up_net_dev_queue(struct net_device *netdev, int mwifiex_init_fw_complete(struct mwifiex_adapter *adapter); -int mwifiex_shutdown_drv(struct mwifiex_adapter *adapter); - -int mwifiex_shutdown_fw_complete(struct mwifiex_adapter *adapter); +void mwifiex_shutdown_drv(struct mwifiex_adapter *adapter); int mwifiex_dnld_fw(struct mwifiex_adapter *, struct mwifiex_fw_image *); diff --git a/drivers/net/wireless/marvell/mwifiex/util.c b/drivers/net/wireless/marvell/mwifiex/util.c index 18fbb96..b1ab8da 100644 --- a/drivers/net/wireless/marvell/mwifiex/util.c +++ b/drivers/net/wireless/marvell/mwifiex/util.c @@ -146,21 +146,6 @@ int mwifiex_init_fw_complete(struct mwifiex_adapter *adapter) } /* - * Firmware shutdown complete callback handler. - * - * This function sets the hardware status to not ready and wakes up - * the function waiting on the init wait queue for the firmware - * shutdown to complete. - */ -int mwifiex_shutdown_fw_complete(struct mwifiex_adapter *adapter) -{ - adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY; - adapter->init_wait_q_woken = true; - wake_up_interruptible(&adapter->init_wait_q); - return 0; -} - -/* * This function sends init/shutdown command * to firmware. */ -- 1.9.1