tifm: move common adapter management tasks from tifm_7xx1 to tifm_core

Some details of the adapter management (create, add, remove) are really
belong to the tifm_core, as they are not hardware specific.
Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

drivers/misc/tifm_7xx1.c

@@ -22,6 +22,11 @@
 #define TIFM_IRQ_FIFOMASK(x)      ((x) << 16)
 #define TIFM_IRQ_SETALL           0xffffffff
 
+static void tifm_7xx1_dummy_eject(struct tifm_adapter *fm,
+				  struct tifm_dev *sock)
+{
+}
+
 static void tifm_7xx1_eject(struct tifm_adapter *fm, struct tifm_dev *sock)
 {
 	unsigned long flags;
@@ -140,7 +145,7 @@ static void tifm_7xx1_switch_media(struct work_struct *work)
 	socket_change_set = fm->socket_change_set;
 	fm->socket_change_set = 0;
 
-	dev_dbg(fm->dev, "checking media set %x\n",
+	dev_dbg(fm->cdev.dev, "checking media set %x\n",
 		socket_change_set);
 
 	if (!socket_change_set) {
@@ -328,20 +333,13 @@ static int tifm_7xx1_probe(struct pci_dev *dev,
 
 	pci_intx(dev, 1);
 
-	fm = tifm_alloc_adapter();
+	fm = tifm_alloc_adapter(dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM
+				? 4 : 2, &dev->dev);
 	if (!fm) {
 		rc = -ENOMEM;
 		goto err_out_int;
 	}
 
-	fm->dev = &dev->dev;
-	fm->num_sockets = (dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM)
-			  ? 4 : 2;
-	fm->sockets = kzalloc(sizeof(struct tifm_dev*) * fm->num_sockets,
-			      GFP_KERNEL);
-	if (!fm->sockets)
-		goto err_out_free;
-
 	INIT_WORK(&fm->media_switcher, tifm_7xx1_switch_media);
 	fm->eject = tifm_7xx1_eject;
 	pci_set_drvdata(dev, fm);
@@ -351,7 +349,7 @@ static int tifm_7xx1_probe(struct pci_dev *dev,
 	if (!fm->addr)
 		goto err_out_free;
 
-	rc = request_irq(dev->irq, tifm_7xx1_isr, IRQF_SHARED, DRIVER_NAME, fm);
+	rc = request_irq(dev->irq, tifm_7xx1_isr, SA_SHIRQ, DRIVER_NAME, fm);
 	if (rc)
 		goto err_out_unmap;
 
@@ -359,10 +357,8 @@ static int tifm_7xx1_probe(struct pci_dev *dev,
 	if (rc)
 		goto err_out_irq;
 
-	writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
 	writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
 	       fm->addr + FM_SET_INTERRUPT_ENABLE);
-
 	return 0;
 
 err_out_irq:
@@ -384,16 +380,12 @@ static int tifm_7xx1_probe(struct pci_dev *dev,
 static void tifm_7xx1_remove(struct pci_dev *dev)
 {
 	struct tifm_adapter *fm = pci_get_drvdata(dev);
-	unsigned long flags;
 
+	fm->eject = tifm_7xx1_dummy_eject;
 	writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
 	mmiowb();
 	free_irq(dev->irq, fm);
 
-	spin_lock_irqsave(&fm->lock, flags);
-	fm->socket_change_set = (1 << fm->num_sockets) - 1;
-	spin_unlock_irqrestore(&fm->lock, flags);
-
 	tifm_remove_adapter(fm);
 
 	pci_set_drvdata(dev, NULL);

drivers/misc/tifm_core.c

@@ -156,7 +156,6 @@ static void tifm_free(struct class_device *cdev)
 {
 	struct tifm_adapter *fm = container_of(cdev, struct tifm_adapter, cdev);
 
-	kfree(fm->sockets);
 	kfree(fm);
 }
 
@@ -165,26 +164,24 @@ static struct class tifm_adapter_class = {
 	.release = tifm_free
 };
 
-struct tifm_adapter *tifm_alloc_adapter(void)
+struct tifm_adapter *tifm_alloc_adapter(unsigned int num_sockets,
+					struct device *dev)
 {
 	struct tifm_adapter *fm;
 
-	fm = kzalloc(sizeof(struct tifm_adapter), GFP_KERNEL);
+	fm = kzalloc(sizeof(struct tifm_adapter)
+		     + sizeof(struct tifm_dev*) * num_sockets, GFP_KERNEL);
 	if (fm) {
 		fm->cdev.class = &tifm_adapter_class;
-		spin_lock_init(&fm->lock);
+		fm->cdev.dev = dev;
 		class_device_initialize(&fm->cdev);
+		spin_lock_init(&fm->lock);
+		fm->num_sockets = num_sockets;
 	}
 	return fm;
 }
 EXPORT_SYMBOL(tifm_alloc_adapter);
 
-void tifm_free_adapter(struct tifm_adapter *fm)
-{
-	class_device_put(&fm->cdev);
-}
-EXPORT_SYMBOL(tifm_free_adapter);
-
 int tifm_add_adapter(struct tifm_adapter *fm)
 {
 	int rc;
@@ -195,31 +192,44 @@ int tifm_add_adapter(struct tifm_adapter *fm)
 	spin_lock(&tifm_adapter_lock);
 	rc = idr_get_new(&tifm_adapter_idr, fm, &fm->id);
 	spin_unlock(&tifm_adapter_lock);
-	if (!rc) {
-		snprintf(fm->cdev.class_id, BUS_ID_SIZE, "tifm%u", fm->id);
-		rc = class_device_add(&fm->cdev);
-
-		if (rc) {
-			spin_lock(&tifm_adapter_lock);
-			idr_remove(&tifm_adapter_idr, fm->id);
-			spin_unlock(&tifm_adapter_lock);
-		}
+	if (rc)
+		return rc;
+
+	snprintf(fm->cdev.class_id, BUS_ID_SIZE, "tifm%u", fm->id);
+	rc = class_device_add(&fm->cdev);
+	if (rc) {
+		spin_lock(&tifm_adapter_lock);
+		idr_remove(&tifm_adapter_idr, fm->id);
+		spin_unlock(&tifm_adapter_lock);
 	}
+
 	return rc;
 }
 EXPORT_SYMBOL(tifm_add_adapter);
 
 void tifm_remove_adapter(struct tifm_adapter *fm)
 {
+	unsigned int cnt;
+
 	flush_workqueue(workqueue);
-	class_device_del(&fm->cdev);
+	for (cnt = 0; cnt < fm->num_sockets; ++cnt) {
+		if (fm->sockets[cnt])
+			device_unregister(&fm->sockets[cnt]->dev);
+	}
 
 	spin_lock(&tifm_adapter_lock);
 	idr_remove(&tifm_adapter_idr, fm->id);
 	spin_unlock(&tifm_adapter_lock);
+	class_device_del(&fm->cdev);
 }
 EXPORT_SYMBOL(tifm_remove_adapter);
 
+void tifm_free_adapter(struct tifm_adapter *fm)
+{
+	class_device_put(&fm->cdev);
+}
+EXPORT_SYMBOL(tifm_free_adapter);
+
 void tifm_free_device(struct device *dev)
 {
 	struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
@@ -234,7 +244,7 @@ struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm)
 	if (dev) {
 		spin_lock_init(&dev->lock);
 
-		dev->dev.parent = fm->dev;
+		dev->dev.parent = fm->cdev.dev;
 		dev->dev.bus = &tifm_bus_type;
 		dev->dev.release = tifm_free_device;
 		dev->card_event = tifm_dummy_event;

include/linux/tifm.h

@@ -114,19 +114,23 @@ struct tifm_adapter {
 	unsigned int            id;
 	unsigned int            num_sockets;
 	struct completion       *finish_me;
-	struct tifm_dev         **sockets;
+
 	struct work_struct      media_switcher;
 	struct class_device     cdev;
-	struct device           *dev;
 
-	void                    (*eject)(struct tifm_adapter *fm, struct tifm_dev *sock);
+	void                    (*eject)(struct tifm_adapter *fm,
+					 struct tifm_dev *sock);
+
+	struct tifm_dev         *sockets[0];
 };
 
-struct tifm_adapter *tifm_alloc_adapter(void);
-void tifm_free_device(struct device *dev);
-void tifm_free_adapter(struct tifm_adapter *fm);
+struct tifm_adapter *tifm_alloc_adapter(unsigned int num_sockets,
+					struct device *dev);
 int tifm_add_adapter(struct tifm_adapter *fm);
 void tifm_remove_adapter(struct tifm_adapter *fm);
+void tifm_free_adapter(struct tifm_adapter *fm);
+
+void tifm_free_device(struct device *dev);
 struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm);
 int tifm_register_driver(struct tifm_driver *drv);
 void tifm_unregister_driver(struct tifm_driver *drv);