1 files changed, 13 insertions, 3 deletions

diff --git a/drivers/net/wireless/cw1200/cw1200_spi.c b/drivers/net/wireless/cw1200/cw1200_spi.c
index d06376014bcd..899cad34ccd3 100644
--- a/drivers/net/wireless/cw1200/cw1200_spi.c
+++ b/drivers/net/wireless/cw1200/cw1200_spi.c
@@ -40,6 +40,7 @@ struct hwbus_priv {
 	struct cw1200_common	*core;
 	const struct cw1200_platform_data_spi *pdata;
 	spinlock_t		lock; /* Serialize all bus operations */
+	wait_queue_head_t       wq;
 	int claimed;
 };
 
@@ -197,8 +198,11 @@ static void cw1200_spi_lock(struct hwbus_priv *self)
 {
 	unsigned long flags;
 
+	DECLARE_WAITQUEUE(wait, current);
+
 	might_sleep();
 
+	add_wait_queue(&self->wq, &wait);
 	spin_lock_irqsave(&self->lock, flags);
 	while (1) {
 		set_current_state(TASK_UNINTERRUPTIBLE);
@@ -211,6 +215,7 @@ static void cw1200_spi_lock(struct hwbus_priv *self)
 	set_current_state(TASK_RUNNING);
 	self->claimed = 1;
 	spin_unlock_irqrestore(&self->lock, flags);
+	remove_wait_queue(&self->wq, &wait);
 
 	return;
 }
@@ -222,6 +227,8 @@ static void cw1200_spi_unlock(struct hwbus_priv *self)
 	spin_lock_irqsave(&self->lock, flags);
 	self->claimed = 0;
 	spin_unlock_irqrestore(&self->lock, flags);
+	wake_up(&self->wq);
+
 	return;
 }
 
@@ -243,9 +250,10 @@ static int cw1200_spi_irq_subscribe(struct hwbus_priv *self)
 
 	pr_debug("SW IRQ subscribe\n");
 
-	ret = request_any_context_irq(self->func->irq, cw1200_spi_irq_handler,
-				      IRQF_TRIGGER_HIGH,
-				      "cw1200_wlan_irq", self);
+	ret = request_threaded_irq(self->func->irq, NULL,
+				   cw1200_spi_irq_handler,
+				   IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
+				   "cw1200_wlan_irq", self);
 	if (WARN_ON(ret < 0))
 		goto exit;
 
@@ -400,6 +408,8 @@ static int cw1200_spi_probe(struct spi_device *func)
 
 	spi_set_drvdata(func, self);
 
+	init_waitqueue_head(&self->wq);
+
 	status = cw1200_spi_irq_subscribe(self);
 
 	status = cw1200_core_probe(&cw1200_spi_hwbus_ops,