1 files changed, 34 insertions, 48 deletions

diff --git a/drivers/hwmon/ams/ams-core.c b/drivers/hwmon/ams/ams-core.c
index fbefa82a015c..6c9ace1b76f6 100644
--- a/drivers/hwmon/ams/ams-core.c
+++ b/drivers/hwmon/ams/ams-core.c
@@ -99,39 +99,31 @@ static struct pmf_irq_client ams_shock_client = {
  */
 static void ams_worker(struct work_struct *work)
 {
-	mutex_lock(&ams_info.lock);
-
-	if (ams_info.has_device) {
-		unsigned long flags;
+	unsigned long flags;
+	u8 irqs_to_clear;
 
-		spin_lock_irqsave(&ams_info.irq_lock, flags);
+	mutex_lock(&ams_info.lock);
 
-		if (ams_info.worker_irqs & AMS_IRQ_FREEFALL) {
-			if (verbose)
-				printk(KERN_INFO "ams: freefall detected!\n");
+	spin_lock_irqsave(&ams_info.irq_lock, flags);
+	irqs_to_clear = ams_info.worker_irqs;
 
-			ams_info.worker_irqs &= ~AMS_IRQ_FREEFALL;
+	if (ams_info.worker_irqs & AMS_IRQ_FREEFALL) {
+		if (verbose)
+			printk(KERN_INFO "ams: freefall detected!\n");
 
-			/* we must call this with interrupts enabled */
-			spin_unlock_irqrestore(&ams_info.irq_lock, flags);
-			ams_info.clear_irq(AMS_IRQ_FREEFALL);
-			spin_lock_irqsave(&ams_info.irq_lock, flags);
-		}
+		ams_info.worker_irqs &= ~AMS_IRQ_FREEFALL;
+	}
 
-		if (ams_info.worker_irqs & AMS_IRQ_SHOCK) {
-			if (verbose)
-				printk(KERN_INFO "ams: shock detected!\n");
+	if (ams_info.worker_irqs & AMS_IRQ_SHOCK) {
+		if (verbose)
+			printk(KERN_INFO "ams: shock detected!\n");
 
-			ams_info.worker_irqs &= ~AMS_IRQ_SHOCK;
+		ams_info.worker_irqs &= ~AMS_IRQ_SHOCK;
+	}
 
-			/* we must call this with interrupts enabled */
-			spin_unlock_irqrestore(&ams_info.irq_lock, flags);
-			ams_info.clear_irq(AMS_IRQ_SHOCK);
-			spin_lock_irqsave(&ams_info.irq_lock, flags);
-		}
+	spin_unlock_irqrestore(&ams_info.irq_lock, flags);
 
-		spin_unlock_irqrestore(&ams_info.irq_lock, flags);
-	}
+	ams_info.clear_irq(irqs_to_clear);
 
 	mutex_unlock(&ams_info.lock);
 }
@@ -223,34 +215,28 @@ int __init ams_init(void)
 
 void ams_exit(void)
 {
-	mutex_lock(&ams_info.lock);
-
-	if (ams_info.has_device) {
-		/* Remove input device */
-		ams_input_exit();
+	/* Remove input device */
+	ams_input_exit();
 
-		/* Shut down implementation */
-		ams_info.exit();
-
-		/* Flush interrupt worker
-		 *
-		 * We do this after ams_info.exit(), because an interrupt might
-		 * have arrived before disabling them.
-		 */
-		flush_scheduled_work();
+	/* Remove attributes */
+	device_remove_file(&ams_info.of_dev->dev, &dev_attr_current);
 
-		/* Remove attributes */
-		device_remove_file(&ams_info.of_dev->dev, &dev_attr_current);
+	/* Shut down implementation */
+	ams_info.exit();
 
-		/* Remove device */
-		of_device_unregister(ams_info.of_dev);
+	/* Flush interrupt worker
+	 *
+	 * We do this after ams_info.exit(), because an interrupt might
+	 * have arrived before disabling them.
+	 */
+	flush_scheduled_work();
 
-		/* Remove handler */
-		pmf_unregister_irq_client(&ams_shock_client);
-		pmf_unregister_irq_client(&ams_freefall_client);
-	}
+	/* Remove device */
+	of_device_unregister(ams_info.of_dev);
 
-	mutex_unlock(&ams_info.lock);
+	/* Remove handler */
+	pmf_unregister_irq_client(&ams_shock_client);
+	pmf_unregister_irq_client(&ams_freefall_client);
 }
 
 MODULE_AUTHOR("Stelian Pop, Michael Hanselmann");