vme: add vme_init_bridge for common bridge init

Consolidate vme_bridge structure setup that every bridge was required
to do itself. This came about because .irq_mtx is only used within the
VME core, but was required to be setup externally.

This returns the structure passed in to support shorthand like this:

    bridge = vme_init_bridge(&priv->bridge);

Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Acked-by: Martyn Welch <martyn@welchs.me.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/vme/bridges/vme_ca91cx42.c

@@ -204,10 +204,6 @@ static int ca91cx42_irq_init(struct vme_bridge *ca91cx42_bridge)
 	/* Need pdev */
 	pdev = to_pci_dev(ca91cx42_bridge->parent);
 
-	INIT_LIST_HEAD(&ca91cx42_bridge->vme_error_handlers);
-
-	mutex_init(&ca91cx42_bridge->irq_mtx);
-
 	/* Disable interrupts from PCI to VME */
 	iowrite32(0, bridge->base + VINT_EN);
 
@@ -1626,6 +1622,7 @@ static int ca91cx42_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		retval = -ENOMEM;
 		goto err_struct;
 	}
+	vme_init_bridge(ca91cx42_bridge);
 
 	ca91cx42_device = kzalloc(sizeof(struct ca91cx42_driver), GFP_KERNEL);
 
@@ -1686,7 +1683,6 @@ static int ca91cx42_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	}
 
 	/* Add master windows to list */
-	INIT_LIST_HEAD(&ca91cx42_bridge->master_resources);
 	for (i = 0; i < CA91C142_MAX_MASTER; i++) {
 		master_image = kmalloc(sizeof(struct vme_master_resource),
 			GFP_KERNEL);
@@ -1713,7 +1709,6 @@ static int ca91cx42_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	}
 
 	/* Add slave windows to list */
-	INIT_LIST_HEAD(&ca91cx42_bridge->slave_resources);
 	for (i = 0; i < CA91C142_MAX_SLAVE; i++) {
 		slave_image = kmalloc(sizeof(struct vme_slave_resource),
 			GFP_KERNEL);
@@ -1741,7 +1736,6 @@ static int ca91cx42_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	}
 
 	/* Add dma engines to list */
-	INIT_LIST_HEAD(&ca91cx42_bridge->dma_resources);
 	for (i = 0; i < CA91C142_MAX_DMA; i++) {
 		dma_ctrlr = kmalloc(sizeof(struct vme_dma_resource),
 			GFP_KERNEL);
@@ -1764,7 +1758,6 @@ static int ca91cx42_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	}
 
 	/* Add location monitor to list */
-	INIT_LIST_HEAD(&ca91cx42_bridge->lm_resources);
 	lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL);
 	if (lm == NULL) {
 		dev_err(&pdev->dev, "Failed to allocate memory for "

drivers/vme/bridges/vme_tsi148.c

@@ -314,10 +314,6 @@ static int tsi148_irq_init(struct vme_bridge *tsi148_bridge)
 
 	bridge = tsi148_bridge->driver_priv;
 
-	INIT_LIST_HEAD(&tsi148_bridge->vme_error_handlers);
-
-	mutex_init(&tsi148_bridge->irq_mtx);
-
 	result = request_irq(pdev->irq,
 			     tsi148_irqhandler,
 			     IRQF_SHARED,
@@ -2301,6 +2297,7 @@ static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		retval = -ENOMEM;
 		goto err_struct;
 	}
+	vme_init_bridge(tsi148_bridge);
 
 	tsi148_device = kzalloc(sizeof(struct tsi148_driver), GFP_KERNEL);
 	if (tsi148_device == NULL) {
@@ -2387,7 +2384,6 @@ static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	}
 
 	/* Add master windows to list */
-	INIT_LIST_HEAD(&tsi148_bridge->master_resources);
 	for (i = 0; i < master_num; i++) {
 		master_image = kmalloc(sizeof(struct vme_master_resource),
 			GFP_KERNEL);
@@ -2417,7 +2413,6 @@ static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	}
 
 	/* Add slave windows to list */
-	INIT_LIST_HEAD(&tsi148_bridge->slave_resources);
 	for (i = 0; i < TSI148_MAX_SLAVE; i++) {
 		slave_image = kmalloc(sizeof(struct vme_slave_resource),
 			GFP_KERNEL);
@@ -2442,7 +2437,6 @@ static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	}
 
 	/* Add dma engines to list */
-	INIT_LIST_HEAD(&tsi148_bridge->dma_resources);
 	for (i = 0; i < TSI148_MAX_DMA; i++) {
 		dma_ctrlr = kmalloc(sizeof(struct vme_dma_resource),
 			GFP_KERNEL);
@@ -2467,7 +2461,6 @@ static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	}
 
 	/* Add location monitor to list */
-	INIT_LIST_HEAD(&tsi148_bridge->lm_resources);
 	lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL);
 	if (lm == NULL) {
 		dev_err(&pdev->dev, "Failed to allocate memory for "

drivers/vme/vme.c

@@ -1429,6 +1429,20 @@ static void vme_dev_release(struct device *dev)
 	kfree(dev_to_vme_dev(dev));
 }
 
+/* Common bridge initialization */
+struct vme_bridge *vme_init_bridge(struct vme_bridge *bridge)
+{
+	INIT_LIST_HEAD(&bridge->vme_error_handlers);
+	INIT_LIST_HEAD(&bridge->master_resources);
+	INIT_LIST_HEAD(&bridge->slave_resources);
+	INIT_LIST_HEAD(&bridge->dma_resources);
+	INIT_LIST_HEAD(&bridge->lm_resources);
+	mutex_init(&bridge->irq_mtx);
+
+	return bridge;
+}
+EXPORT_SYMBOL(vme_init_bridge);
+
 int vme_register_bridge(struct vme_bridge *bridge)
 {
 	int i;

drivers/vme/vme_bridge.h

@@ -177,6 +177,7 @@ void vme_bus_error_handler(struct vme_bridge *bridge,
 			   unsigned long long address, int am);
 void vme_irq_handler(struct vme_bridge *, int, int);
 
+struct vme_bridge *vme_init_bridge(struct vme_bridge *);
 int vme_register_bridge(struct vme_bridge *);
 void vme_unregister_bridge(struct vme_bridge *);
 struct vme_error_handler *vme_register_error_handler(