From a3299ab18591d36ad5622f5064619123c439b779 Mon Sep 17 00:00:00 2001 From: Philip J Kelleher Date: Tue, 18 Jun 2013 14:34:54 -0500 Subject: rsxx: Individual workqueues for interruptible events. Giving all interrupt based events their own workqueue to complete tasks on. This fixes a bug that would cause creg commands to timeout if too many are issued at once. Signed-off-by: Philip J Kelleher Signed-off-by: Jens Axboe --- drivers/block/rsxx/core.c | 23 ++++++++++++++++++++--- drivers/block/rsxx/cregs.c | 5 +++++ drivers/block/rsxx/rsxx_priv.h | 2 ++ 3 files changed, 27 insertions(+), 3 deletions(-) (limited to 'drivers/block') diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c index 5af21f2..774f810 100644 --- a/drivers/block/rsxx/core.c +++ b/drivers/block/rsxx/core.c @@ -163,12 +163,13 @@ static irqreturn_t rsxx_isr(int irq, void *pdata) } if (isr & CR_INTR_CREG) { - schedule_work(&card->creg_ctrl.done_work); + queue_work(card->creg_ctrl.creg_wq, + &card->creg_ctrl.done_work); handled++; } if (isr & CR_INTR_EVENT) { - schedule_work(&card->event_work); + queue_work(card->event_wq, &card->event_work); rsxx_disable_ier_and_isr(card, CR_INTR_EVENT); handled++; } @@ -610,7 +611,11 @@ static int rsxx_pci_probe(struct pci_dev *dev, } /************* Setup Processor Command Interface *************/ - rsxx_creg_setup(card); + st = rsxx_creg_setup(card); + if (st) { + dev_err(CARD_TO_DEV(card), "Failed to setup creg interface.\n"); + goto failed_creg_setup; + } spin_lock_irq(&card->irq_lock); rsxx_enable_ier_and_isr(card, CR_INTR_CREG); @@ -650,6 +655,12 @@ static int rsxx_pci_probe(struct pci_dev *dev, } /************* Setup Card Event Handler *************/ + card->event_wq = create_singlethread_workqueue(DRIVER_NAME"_event"); + if (!card->event_wq) { + dev_err(CARD_TO_DEV(card), "Failed card event setup.\n"); + goto failed_event_handler; + } + INIT_WORK(&card->event_work, card_event_handler); st = rsxx_setup_dev(card); @@ -688,9 +699,15 @@ static int rsxx_pci_probe(struct pci_dev *dev, return 0; failed_create_dev: + destroy_workqueue(card->event_wq); + card->event_wq = NULL; +failed_event_handler: rsxx_dma_destroy(card); failed_dma_setup: failed_compatiblity_check: + destroy_workqueue(card->creg_ctrl.creg_wq); + card->creg_ctrl.creg_wq = NULL; +failed_creg_setup: spin_lock_irq(&card->irq_lock); rsxx_disable_ier_and_isr(card, CR_INTR_ALL); spin_unlock_irq(&card->irq_lock); diff --git a/drivers/block/rsxx/cregs.c b/drivers/block/rsxx/cregs.c index 4b5c020..4914464 100644 --- a/drivers/block/rsxx/cregs.c +++ b/drivers/block/rsxx/cregs.c @@ -727,6 +727,11 @@ int rsxx_creg_setup(struct rsxx_cardinfo *card) { card->creg_ctrl.active_cmd = NULL; + card->creg_ctrl.creg_wq = + create_singlethread_workqueue(DRIVER_NAME"_creg"); + if (!card->creg_ctrl.creg_wq) + return -ENOMEM; + INIT_WORK(&card->creg_ctrl.done_work, creg_cmd_done); mutex_init(&card->creg_ctrl.reset_lock); INIT_LIST_HEAD(&card->creg_ctrl.queue); diff --git a/drivers/block/rsxx/rsxx_priv.h b/drivers/block/rsxx/rsxx_priv.h index 382e8bf..0dd62d9 100644 --- a/drivers/block/rsxx/rsxx_priv.h +++ b/drivers/block/rsxx/rsxx_priv.h @@ -134,6 +134,7 @@ struct rsxx_cardinfo { spinlock_t lock; bool active; struct creg_cmd *active_cmd; + struct workqueue_struct *creg_wq; struct work_struct done_work; struct list_head queue; unsigned int q_depth; @@ -154,6 +155,7 @@ struct rsxx_cardinfo { int buf_len; } log; + struct workqueue_struct *event_wq; struct work_struct event_work; unsigned int state; u64 size8; -- cgit v1.1