Merge tag 'vme-next-4.14-rc4' of https://gitlab.collabora.com/martyn/linux into char-misc-next

Martyn writes:

VME Subsystem changes for master v4.14-rc4:

- Corrections across the VME subsystem to better align with the preferred
kernel coding style.

drivers/vme/bridges/vme_ca91cx42.c

···
 	ca91cx42_bridge = image->parent;
 
 	/* Find pci_dev container of dev */
-	if (ca91cx42_bridge->parent == NULL) {
+	if (!ca91cx42_bridge->parent) {
 		dev_err(ca91cx42_bridge->parent, "Dev entry NULL\n");
 		return -EINVAL;
 	}
···
 		image->kern_base = NULL;
 		kfree(image->bus_resource.name);
 		release_resource(&image->bus_resource);
-		memset(&image->bus_resource, 0, sizeof(struct resource));
+		memset(&image->bus_resource, 0, sizeof(image->bus_resource));
 	}
 
-	if (image->bus_resource.name == NULL) {
+	if (!image->bus_resource.name) {
 		image->bus_resource.name = kmalloc(VMENAMSIZ+3, GFP_ATOMIC);
-		if (image->bus_resource.name == NULL) {
-			dev_err(ca91cx42_bridge->parent, "Unable to allocate "
-				"memory for resource name\n");
+		if (!image->bus_resource.name) {
 			retval = -ENOMEM;
 			goto err_name;
 		}
···
 
 	image->kern_base = ioremap_nocache(
 		image->bus_resource.start, size);
-	if (image->kern_base == NULL) {
+	if (!image->kern_base) {
 		dev_err(ca91cx42_bridge->parent, "Failed to remap resource\n");
 		retval = -ENOMEM;
 		goto err_remap;
···
 	release_resource(&image->bus_resource);
 err_resource:
 	kfree(image->bus_resource.name);
-	memset(&image->bus_resource, 0, sizeof(struct resource));
+	memset(&image->bus_resource, 0, sizeof(image->bus_resource));
 err_name:
 	return retval;
 }
···
 	image->kern_base = NULL;
 	release_resource(&image->bus_resource);
 	kfree(image->bus_resource.name);
-	memset(&image->bus_resource, 0, sizeof(struct resource));
+	memset(&image->bus_resource, 0, sizeof(image->bus_resource));
 }
 
 
···
 	dev = list->parent->parent->parent;
 
 	/* XXX descriptor must be aligned on 64-bit boundaries */
-	entry = kmalloc(sizeof(struct ca91cx42_dma_entry), GFP_KERNEL);
-	if (entry == NULL) {
-		dev_err(dev, "Failed to allocate memory for dma resource "
-			"structure\n");
+	entry = kmalloc(sizeof(*entry), GFP_KERNEL);
+	if (!entry) {
 		retval = -ENOMEM;
 		goto err_mem;
 	}
···
 		goto err_align;
 	}
 
-	memset(&entry->descriptor, 0, sizeof(struct ca91cx42_dma_descriptor));
+	memset(&entry->descriptor, 0, sizeof(entry->descriptor));
 
 	if (dest->type == VME_DMA_VME) {
 		entry->descriptor.dctl |= CA91CX42_DCTL_L2V;
···
 
 	/* If we already have a callback attached, we can't move it! */
 	for (i = 0; i < lm->monitors; i++) {
-		if (bridge->lm_callback[i] != NULL) {
+		if (bridge->lm_callback[i]) {
 			mutex_unlock(&lm->mtx);
 			dev_err(dev, "Location monitor callback attached, "
 				"can't reset\n");
···
 	}
 
 	/* Check that a callback isn't already attached */
-	if (bridge->lm_callback[monitor] != NULL) {
+	if (bridge->lm_callback[monitor]) {
 		mutex_unlock(&lm->mtx);
 		dev_err(dev, "Existing callback attached\n");
 		return -EBUSY;
···
 	/* Allocate mem for CR/CSR image */
 	bridge->crcsr_kernel = pci_zalloc_consistent(pdev, VME_CRCSR_BUF_SIZE,
 						     &bridge->crcsr_bus);
-	if (bridge->crcsr_kernel == NULL) {
+	if (!bridge->crcsr_kernel) {
 		dev_err(&pdev->dev, "Failed to allocate memory for CR/CSR "
 			"image\n");
 		return -ENOMEM;
···
 	/* We want to support more than one of each bridge so we need to
 	 * dynamically allocate the bridge structure
 	 */
-	ca91cx42_bridge = kzalloc(sizeof(struct vme_bridge), GFP_KERNEL);
-
-	if (ca91cx42_bridge == NULL) {
-		dev_err(&pdev->dev, "Failed to allocate memory for device "
-			"structure\n");
+	ca91cx42_bridge = kzalloc(sizeof(*ca91cx42_bridge), GFP_KERNEL);
+	if (!ca91cx42_bridge) {
 		retval = -ENOMEM;
 		goto err_struct;
 	}
 	vme_init_bridge(ca91cx42_bridge);
 
-	ca91cx42_device = kzalloc(sizeof(struct ca91cx42_driver), GFP_KERNEL);
-
-	if (ca91cx42_device == NULL) {
-		dev_err(&pdev->dev, "Failed to allocate memory for device "
-			"structure\n");
+	ca91cx42_device = kzalloc(sizeof(*ca91cx42_device), GFP_KERNEL);
+	if (!ca91cx42_device) {
 		retval = -ENOMEM;
 		goto err_driver;
 	}
···
 
 	/* Add master windows to list */
 	for (i = 0; i < CA91C142_MAX_MASTER; i++) {
-		master_image = kmalloc(sizeof(struct vme_master_resource),
-			GFP_KERNEL);
-		if (master_image == NULL) {
-			dev_err(&pdev->dev, "Failed to allocate memory for "
-			"master resource structure\n");
+		master_image = kmalloc(sizeof(*master_image), GFP_KERNEL);
+		if (!master_image) {
 			retval = -ENOMEM;
 			goto err_master;
 		}
···
 			VME_SUPER | VME_USER | VME_PROG | VME_DATA;
 		master_image->width_attr = VME_D8 | VME_D16 | VME_D32 | VME_D64;
 		memset(&master_image->bus_resource, 0,
-			sizeof(struct resource));
+		       sizeof(master_image->bus_resource));
 		master_image->kern_base  = NULL;
 		list_add_tail(&master_image->list,
 			&ca91cx42_bridge->master_resources);
···
 
 	/* Add slave windows to list */
 	for (i = 0; i < CA91C142_MAX_SLAVE; i++) {
-		slave_image = kmalloc(sizeof(struct vme_slave_resource),
-			GFP_KERNEL);
-		if (slave_image == NULL) {
-			dev_err(&pdev->dev, "Failed to allocate memory for "
-			"slave resource structure\n");
+		slave_image = kmalloc(sizeof(*slave_image), GFP_KERNEL);
+		if (!slave_image) {
 			retval = -ENOMEM;
 			goto err_slave;
 		}
···
 
 	/* Add dma engines to list */
 	for (i = 0; i < CA91C142_MAX_DMA; i++) {
-		dma_ctrlr = kmalloc(sizeof(struct vme_dma_resource),
-			GFP_KERNEL);
-		if (dma_ctrlr == NULL) {
-			dev_err(&pdev->dev, "Failed to allocate memory for "
-			"dma resource structure\n");
+		dma_ctrlr = kmalloc(sizeof(*dma_ctrlr), GFP_KERNEL);
+		if (!dma_ctrlr) {
 			retval = -ENOMEM;
 			goto err_dma;
 		}
···
 	}
 
 	/* Add location monitor to list */
-	lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL);
-	if (lm == NULL) {
-		dev_err(&pdev->dev, "Failed to allocate memory for "
-		"location monitor resource structure\n");
+	lm = kmalloc(sizeof(*lm), GFP_KERNEL);
+	if (!lm) {
 		retval = -ENOMEM;
 		goto err_lm;
 	}

drivers/vme/bridges/vme_fake.c

···
 				/* Each location monitor covers 8 bytes */
 				if (((lm_base + (8 * i)) <= addr) &&
 				    ((lm_base + (8 * i) + 8) > addr)) {
-					if (bridge->lm_callback[i] != NULL)
+					if (bridge->lm_callback[i])
 						bridge->lm_callback[i](
 							bridge->lm_data[i]);
 				}
···
 
 	/* If we already have a callback attached, we can't move it! */
 	for (i = 0; i < lm->monitors; i++) {
-		if (bridge->lm_callback[i] != NULL) {
+		if (bridge->lm_callback[i]) {
 			mutex_unlock(&lm->mtx);
 			pr_err("Location monitor callback attached, can't reset\n");
 			return -EBUSY;
···
 	}
 
 	/* Check that a callback isn't already attached */
-	if (bridge->lm_callback[monitor] != NULL) {
+	if (bridge->lm_callback[monitor]) {
 		mutex_unlock(&lm->mtx);
 		pr_err("Existing callback attached\n");
 		return -EBUSY;
···
 	/* If all location monitors disabled, disable global Location Monitor */
 	tmp = 0;
 	for (i = 0; i < lm->monitors; i++) {
-		if (bridge->lm_callback[i] != NULL)
+		if (bridge->lm_callback[i])
 			tmp = 1;
 	}
 
···
 {
 	void *alloc = kmalloc(size, GFP_KERNEL);
 
-	if (alloc != NULL)
+	if (alloc)
 		*dma = fake_ptr_to_pci(alloc);
 
 	return alloc;
···
 	/* Allocate mem for CR/CSR image */
 	bridge->crcsr_kernel = kzalloc(VME_CRCSR_BUF_SIZE, GFP_KERNEL);
 	bridge->crcsr_bus = fake_ptr_to_pci(bridge->crcsr_kernel);
-	if (bridge->crcsr_kernel == NULL)
+	if (!bridge->crcsr_kernel)
 		return -ENOMEM;
 
 	vstat = fake_slot_get(fake_bridge);
···
 	/* If we want to support more than one bridge at some point, we need to
 	 * dynamically allocate this so we get one per device.
 	 */
-	fake_bridge = kzalloc(sizeof(struct vme_bridge), GFP_KERNEL);
-	if (fake_bridge == NULL) {
+	fake_bridge = kzalloc(sizeof(*fake_bridge), GFP_KERNEL);
+	if (!fake_bridge) {
 		retval = -ENOMEM;
 		goto err_struct;
 	}
 
-	fake_device = kzalloc(sizeof(struct fake_driver), GFP_KERNEL);
-	if (fake_device == NULL) {
+	fake_device = kzalloc(sizeof(*fake_device), GFP_KERNEL);
+	if (!fake_device) {
 		retval = -ENOMEM;
 		goto err_driver;
 	}
···
 	/* Add master windows to list */
 	INIT_LIST_HEAD(&fake_bridge->master_resources);
 	for (i = 0; i < FAKE_MAX_MASTER; i++) {
-		master_image = kmalloc(sizeof(struct vme_master_resource),
-				GFP_KERNEL);
-		if (master_image == NULL) {
+		master_image = kmalloc(sizeof(*master_image), GFP_KERNEL);
+		if (!master_image) {
 			retval = -ENOMEM;
 			goto err_master;
 		}
···
 	/* Add slave windows to list */
 	INIT_LIST_HEAD(&fake_bridge->slave_resources);
 	for (i = 0; i < FAKE_MAX_SLAVE; i++) {
-		slave_image = kmalloc(sizeof(struct vme_slave_resource),
-				GFP_KERNEL);
-		if (slave_image == NULL) {
+		slave_image = kmalloc(sizeof(*slave_image), GFP_KERNEL);
+		if (!slave_image) {
 			retval = -ENOMEM;
 			goto err_slave;
 		}
···
 
 	/* Add location monitor to list */
 	INIT_LIST_HEAD(&fake_bridge->lm_resources);
-	lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL);
-	if (lm == NULL) {
-		pr_err("Failed to allocate memory for location monitor resource structure\n");
+	lm = kmalloc(sizeof(*lm), GFP_KERNEL);
+	if (!lm) {
 		retval = -ENOMEM;
 		goto err_lm;
 	}

drivers/vme/bridges/vme_tsi148.c

···
 		image->kern_base = NULL;
 		kfree(image->bus_resource.name);
 		release_resource(&image->bus_resource);
-		memset(&image->bus_resource, 0, sizeof(struct resource));
+		memset(&image->bus_resource, 0, sizeof(image->bus_resource));
 	}
 
 	/* Exit here if size is zero */
 	if (size == 0)
 		return 0;
 
-	if (image->bus_resource.name == NULL) {
+	if (!image->bus_resource.name) {
 		image->bus_resource.name = kmalloc(VMENAMSIZ+3, GFP_ATOMIC);
-		if (image->bus_resource.name == NULL) {
-			dev_err(tsi148_bridge->parent, "Unable to allocate "
-				"memory for resource name\n");
+		if (!image->bus_resource.name) {
 			retval = -ENOMEM;
 			goto err_name;
 		}
···
 
 	image->kern_base = ioremap_nocache(
 		image->bus_resource.start, size);
-	if (image->kern_base == NULL) {
+	if (!image->kern_base) {
 		dev_err(tsi148_bridge->parent, "Failed to remap resource\n");
 		retval = -ENOMEM;
 		goto err_remap;
···
 	release_resource(&image->bus_resource);
 err_resource:
 	kfree(image->bus_resource.name);
-	memset(&image->bus_resource, 0, sizeof(struct resource));
+	memset(&image->bus_resource, 0, sizeof(image->bus_resource));
 err_name:
 	return retval;
 }
···
 	image->kern_base = NULL;
 	release_resource(&image->bus_resource);
 	kfree(image->bus_resource.name);
-	memset(&image->bus_resource, 0, sizeof(struct resource));
+	memset(&image->bus_resource, 0, sizeof(image->bus_resource));
 }
 
 /*
···
 	tsi148_bridge = list->parent->parent;
 
 	/* Descriptor must be aligned on 64-bit boundaries */
-	entry = kmalloc(sizeof(struct tsi148_dma_entry), GFP_KERNEL);
-	if (entry == NULL) {
-		dev_err(tsi148_bridge->parent, "Failed to allocate memory for "
-			"dma resource structure\n");
+	entry = kmalloc(sizeof(*entry), GFP_KERNEL);
+	if (!entry) {
 		retval = -ENOMEM;
 		goto err_mem;
 	}
···
 	/* Given we are going to fill out the structure, we probably don't
 	 * need to zero it, but better safe than sorry for now.
 	 */
-	memset(&entry->descriptor, 0, sizeof(struct tsi148_dma_descriptor));
+	memset(&entry->descriptor, 0, sizeof(entry->descriptor));
 
 	/* Fill out source part */
 	switch (src->type) {
···
 	list_add_tail(&entry->list, &list->entries);
 
 	entry->dma_handle = dma_map_single(tsi148_bridge->parent,
-		&entry->descriptor,
-		sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE);
+					   &entry->descriptor,
+					   sizeof(entry->descriptor),
+					   DMA_TO_DEVICE);
 	if (dma_mapping_error(tsi148_bridge->parent, entry->dma_handle)) {
 		dev_err(tsi148_bridge->parent, "DMA mapping error\n");
 		retval = -EINVAL;
···
 
 	/* If we already have a callback attached, we can't move it! */
 	for (i = 0; i < lm->monitors; i++) {
-		if (bridge->lm_callback[i] != NULL) {
+		if (bridge->lm_callback[i]) {
 			mutex_unlock(&lm->mtx);
 			dev_err(tsi148_bridge->parent, "Location monitor "
 				"callback attached, can't reset\n");
···
 	}
 
 	/* Check that a callback isn't already attached */
-	if (bridge->lm_callback[monitor] != NULL) {
+	if (bridge->lm_callback[monitor]) {
 		mutex_unlock(&lm->mtx);
 		dev_err(tsi148_bridge->parent, "Existing callback attached\n");
 		return -EBUSY;
···
 	/* Allocate mem for CR/CSR image */
 	bridge->crcsr_kernel = pci_zalloc_consistent(pdev, VME_CRCSR_BUF_SIZE,
 						     &bridge->crcsr_bus);
-	if (bridge->crcsr_kernel == NULL) {
+	if (!bridge->crcsr_kernel) {
 		dev_err(tsi148_bridge->parent, "Failed to allocate memory for "
 			"CR/CSR image\n");
 		return -ENOMEM;
···
 	/* If we want to support more than one of each bridge, we need to
 	 * dynamically generate this so we get one per device
 	 */
-	tsi148_bridge = kzalloc(sizeof(struct vme_bridge), GFP_KERNEL);
-	if (tsi148_bridge == NULL) {
-		dev_err(&pdev->dev, "Failed to allocate memory for device "
-			"structure\n");
+	tsi148_bridge = kzalloc(sizeof(*tsi148_bridge), GFP_KERNEL);
+	if (!tsi148_bridge) {
 		retval = -ENOMEM;
 		goto err_struct;
 	}
 	vme_init_bridge(tsi148_bridge);
 
-	tsi148_device = kzalloc(sizeof(struct tsi148_driver), GFP_KERNEL);
-	if (tsi148_device == NULL) {
-		dev_err(&pdev->dev, "Failed to allocate memory for device "
-			"structure\n");
+	tsi148_device = kzalloc(sizeof(*tsi148_device), GFP_KERNEL);
+	if (!tsi148_device) {
 		retval = -ENOMEM;
 		goto err_driver;
 	}
···
 		master_num--;
 
 		tsi148_device->flush_image =
-			kmalloc(sizeof(struct vme_master_resource), GFP_KERNEL);
-		if (tsi148_device->flush_image == NULL) {
-			dev_err(&pdev->dev, "Failed to allocate memory for "
-			"flush resource structure\n");
+			kmalloc(sizeof(*tsi148_device->flush_image),
+				GFP_KERNEL);
+		if (!tsi148_device->flush_image) {
 			retval = -ENOMEM;
 			goto err_master;
 		}
···
 		tsi148_device->flush_image->locked = 1;
 		tsi148_device->flush_image->number = master_num;
 		memset(&tsi148_device->flush_image->bus_resource, 0,
-			sizeof(struct resource));
+		       sizeof(tsi148_device->flush_image->bus_resource));
 		tsi148_device->flush_image->kern_base  = NULL;
 	}
 
 	/* Add master windows to list */
 	for (i = 0; i < master_num; i++) {
-		master_image = kmalloc(sizeof(struct vme_master_resource),
-			GFP_KERNEL);
-		if (master_image == NULL) {
-			dev_err(&pdev->dev, "Failed to allocate memory for "
-			"master resource structure\n");
+		master_image = kmalloc(sizeof(*master_image), GFP_KERNEL);
+		if (!master_image) {
 			retval = -ENOMEM;
 			goto err_master;
 		}
···
 			VME_PROG | VME_DATA;
 		master_image->width_attr = VME_D16 | VME_D32;
 		memset(&master_image->bus_resource, 0,
-			sizeof(struct resource));
+		       sizeof(master_image->bus_resource));
 		master_image->kern_base  = NULL;
 		list_add_tail(&master_image->list,
 			&tsi148_bridge->master_resources);
···
 
 	/* Add slave windows to list */
 	for (i = 0; i < TSI148_MAX_SLAVE; i++) {
-		slave_image = kmalloc(sizeof(struct vme_slave_resource),
-			GFP_KERNEL);
-		if (slave_image == NULL) {
-			dev_err(&pdev->dev, "Failed to allocate memory for "
-			"slave resource structure\n");
+		slave_image = kmalloc(sizeof(*slave_image), GFP_KERNEL);
+		if (!slave_image) {
 			retval = -ENOMEM;
 			goto err_slave;
 		}
···
 
 	/* Add dma engines to list */
 	for (i = 0; i < TSI148_MAX_DMA; i++) {
-		dma_ctrlr = kmalloc(sizeof(struct vme_dma_resource),
-			GFP_KERNEL);
-		if (dma_ctrlr == NULL) {
-			dev_err(&pdev->dev, "Failed to allocate memory for "
-			"dma resource structure\n");
+		dma_ctrlr = kmalloc(sizeof(*dma_ctrlr), GFP_KERNEL);
+		if (!dma_ctrlr) {
 			retval = -ENOMEM;
 			goto err_dma;
 		}
···
 	}
 
 	/* Add location monitor to list */
-	lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL);
-	if (lm == NULL) {
-		dev_err(&pdev->dev, "Failed to allocate memory for "
-		"location monitor resource structure\n");
+	lm = kmalloc(sizeof(*lm), GFP_KERNEL);
+	if (!lm) {
 		retval = -ENOMEM;
 		goto err_lm;
 	}

drivers/vme/vme.c

···
 {
 	struct vme_bridge *bridge;
 
-	if (resource == NULL) {
+	if (!resource) {
 		printk(KERN_ERR "No resource\n");
 		return NULL;
 	}
 
 	bridge = find_bridge(resource);
-	if (bridge == NULL) {
+	if (!bridge) {
 		printk(KERN_ERR "Can't find bridge\n");
 		return NULL;
 	}
 
-	if (bridge->parent == NULL) {
+	if (!bridge->parent) {
 		printk(KERN_ERR "Dev entry NULL for bridge %s\n", bridge->name);
 		return NULL;
 	}
 
-	if (bridge->alloc_consistent == NULL) {
+	if (!bridge->alloc_consistent) {
 		printk(KERN_ERR "alloc_consistent not supported by bridge %s\n",
 		       bridge->name);
 		return NULL;
···
 {
 	struct vme_bridge *bridge;
 
-	if (resource == NULL) {
+	if (!resource) {
 		printk(KERN_ERR "No resource\n");
 		return;
 	}
 
 	bridge = find_bridge(resource);
-	if (bridge == NULL) {
+	if (!bridge) {
 		printk(KERN_ERR "Can't find bridge\n");
 		return;
 	}
 
-	if (bridge->parent == NULL) {
+	if (!bridge->parent) {
 		printk(KERN_ERR "Dev entry NULL for bridge %s\n", bridge->name);
 		return;
 	}
 
-	if (bridge->free_consistent == NULL) {
+	if (!bridge->free_consistent) {
 		printk(KERN_ERR "free_consistent not supported by bridge %s\n",
 		       bridge->name);
 		return;
···
 	struct vme_resource *resource = NULL;
 
 	bridge = vdev->bridge;
-	if (bridge == NULL) {
+	if (!bridge) {
 		printk(KERN_ERR "Can't find VME bus\n");
 		goto err_bus;
 	}
···
 		slave_image = list_entry(slave_pos,
 			struct vme_slave_resource, list);
 
-		if (slave_image == NULL) {
+		if (!slave_image) {
 			printk(KERN_ERR "Registered NULL Slave resource\n");
 			continue;
 		}
···
 	}
 
 	/* No free image */
-	if (allocated_image == NULL)
+	if (!allocated_image)
 		goto err_image;
 
-	resource = kmalloc(sizeof(struct vme_resource), GFP_KERNEL);
-	if (resource == NULL) {
-		printk(KERN_WARNING "Unable to allocate resource structure\n");
+	resource = kmalloc(sizeof(*resource), GFP_KERNEL);
+	if (!resource)
 		goto err_alloc;
-	}
+
 	resource->type = VME_SLAVE;
 	resource->entry = &allocated_image->list;
 
···
 
 	image = list_entry(resource->entry, struct vme_slave_resource, list);
 
-	if (bridge->slave_set == NULL) {
+	if (!bridge->slave_set) {
 		printk(KERN_ERR "Function not supported\n");
 		return -ENOSYS;
 	}
···
 
 	image = list_entry(resource->entry, struct vme_slave_resource, list);
 
-	if (bridge->slave_get == NULL) {
+	if (!bridge->slave_get) {
 		printk(KERN_ERR "vme_slave_get not supported\n");
 		return -EINVAL;
 	}
···
 
 	slave_image = list_entry(resource->entry, struct vme_slave_resource,
 		list);
-	if (slave_image == NULL) {
+	if (!slave_image) {
 		printk(KERN_ERR "Can't find slave resource\n");
 		return;
 	}
···
 	struct vme_resource *resource = NULL;
 
 	bridge = vdev->bridge;
-	if (bridge == NULL) {
+	if (!bridge) {
 		printk(KERN_ERR "Can't find VME bus\n");
 		goto err_bus;
 	}
···
 		master_image = list_entry(master_pos,
 			struct vme_master_resource, list);
 
-		if (master_image == NULL) {
+		if (!master_image) {
 			printk(KERN_WARNING "Registered NULL master resource\n");
 			continue;
 		}
···
 	}
 
 	/* Check to see if we found a resource */
-	if (allocated_image == NULL) {
+	if (!allocated_image) {
 		printk(KERN_ERR "Can't find a suitable resource\n");
 		goto err_image;
 	}
 
-	resource = kmalloc(sizeof(struct vme_resource), GFP_KERNEL);
-	if (resource == NULL) {
-		printk(KERN_ERR "Unable to allocate resource structure\n");
+	resource = kmalloc(sizeof(*resource), GFP_KERNEL);
+	if (!resource)
 		goto err_alloc;
-	}
+
 	resource->type = VME_MASTER;
 	resource->entry = &allocated_image->list;
 
···
 
 	image = list_entry(resource->entry, struct vme_master_resource, list);
 
-	if (bridge->master_set == NULL) {
+	if (!bridge->master_set) {
 		printk(KERN_WARNING "vme_master_set not supported\n");
 		return -EINVAL;
 	}
···
 
 	image = list_entry(resource->entry, struct vme_master_resource, list);
 
-	if (bridge->master_get == NULL) {
+	if (!bridge->master_get) {
 		printk(KERN_WARNING "%s not supported\n", __func__);
 		return -EINVAL;
 	}
···
 	struct vme_master_resource *image;
 	size_t length;
 
-	if (bridge->master_read == NULL) {
+	if (!bridge->master_read) {
 		printk(KERN_WARNING "Reading from resource not supported\n");
 		return -EINVAL;
 	}
···
 	struct vme_master_resource *image;
 	size_t length;
 
-	if (bridge->master_write == NULL) {
+	if (!bridge->master_write) {
 		printk(KERN_WARNING "Writing to resource not supported\n");
 		return -EINVAL;
 	}
···
 	struct vme_bridge *bridge = find_bridge(resource);
 	struct vme_master_resource *image;
 
-	if (bridge->master_rmw == NULL) {
+	if (!bridge->master_rmw) {
 		printk(KERN_WARNING "Writing to resource not supported\n");
 		return -EINVAL;
 	}
···
 
 	master_image = list_entry(resource->entry, struct vme_master_resource,
 		list);
-	if (master_image == NULL) {
+	if (!master_image) {
 		printk(KERN_ERR "Can't find master resource\n");
 		return;
 	}
···
 	printk(KERN_ERR "No VME resource Attribute tests done\n");
 
 	bridge = vdev->bridge;
-	if (bridge == NULL) {
+	if (!bridge) {
 		printk(KERN_ERR "Can't find VME bus\n");
 		goto err_bus;
 	}
···
 	list_for_each(dma_pos, &bridge->dma_resources) {
 		dma_ctrlr = list_entry(dma_pos,
 			struct vme_dma_resource, list);
-
-		if (dma_ctrlr == NULL) {
+		if (!dma_ctrlr) {
 			printk(KERN_ERR "Registered NULL DMA resource\n");
 			continue;
 		}
···
 	}
 
 	/* Check to see if we found a resource */
-	if (allocated_ctrlr == NULL)
+	if (!allocated_ctrlr)
 		goto err_ctrlr;
 
-	resource = kmalloc(sizeof(struct vme_resource), GFP_KERNEL);
-	if (resource == NULL) {
-		printk(KERN_WARNING "Unable to allocate resource structure\n");
+	resource = kmalloc(sizeof(*resource), GFP_KERNEL);
+	if (!resource)
 		goto err_alloc;
-	}
+
 	resource->type = VME_DMA;
 	resource->entry = &allocated_ctrlr->list;
 
···
  */
 struct vme_dma_list *vme_new_dma_list(struct vme_resource *resource)
 {
-	struct vme_dma_resource *ctrlr;
 	struct vme_dma_list *dma_list;
 
 	if (resource->type != VME_DMA) {
···
 		return NULL;
 	}
 
-	ctrlr = list_entry(resource->entry, struct vme_dma_resource, list);
-
-	dma_list = kmalloc(sizeof(struct vme_dma_list), GFP_KERNEL);
-	if (dma_list == NULL) {
-		printk(KERN_ERR "Unable to allocate memory for new DMA list\n");
+	dma_list = kmalloc(sizeof(*dma_list), GFP_KERNEL);
+	if (!dma_list)
 		return NULL;
-	}
+
 	INIT_LIST_HEAD(&dma_list->entries);
-	dma_list->parent = ctrlr;
+	dma_list->parent = list_entry(resource->entry,
+				      struct vme_dma_resource,
+				      list);
 	mutex_init(&dma_list->mtx);
 
 	return dma_list;
···
 	struct vme_dma_attr *attributes;
 	struct vme_dma_pattern *pattern_attr;
 
-	attributes = kmalloc(sizeof(struct vme_dma_attr), GFP_KERNEL);
-	if (attributes == NULL) {
-		printk(KERN_ERR "Unable to allocate memory for attributes structure\n");
+	attributes = kmalloc(sizeof(*attributes), GFP_KERNEL);
+	if (!attributes)
 		goto err_attr;
-	}
 
-	pattern_attr = kmalloc(sizeof(struct vme_dma_pattern), GFP_KERNEL);
-	if (pattern_attr == NULL) {
-		printk(KERN_ERR "Unable to allocate memory for pattern attributes\n");
+	pattern_attr = kmalloc(sizeof(*pattern_attr), GFP_KERNEL);
+	if (!pattern_attr)
 		goto err_pat;
-	}
 
 	attributes->type = VME_DMA_PATTERN;
 	attributes->private = (void *)pattern_attr;
···
 
 	/* XXX Run some sanity checks here */
 
-	attributes = kmalloc(sizeof(struct vme_dma_attr), GFP_KERNEL);
-	if (attributes == NULL) {
-		printk(KERN_ERR "Unable to allocate memory for attributes structure\n");
+	attributes = kmalloc(sizeof(*attributes), GFP_KERNEL);
+	if (!attributes)
 		goto err_attr;
-	}
 
-	pci_attr = kmalloc(sizeof(struct vme_dma_pci), GFP_KERNEL);
-	if (pci_attr == NULL) {
-		printk(KERN_ERR "Unable to allocate memory for PCI attributes\n");
+	pci_attr = kmalloc(sizeof(*pci_attr), GFP_KERNEL);
+	if (!pci_attr)
 		goto err_pci;
-	}
-
-
 
 	attributes->type = VME_DMA_PCI;
 	attributes->private = (void *)pci_attr;
···
 	struct vme_dma_attr *attributes;
 	struct vme_dma_vme *vme_attr;
 
-	attributes = kmalloc(
-		sizeof(struct vme_dma_attr), GFP_KERNEL);
-	if (attributes == NULL) {
-		printk(KERN_ERR "Unable to allocate memory for attributes structure\n");
+	attributes = kmalloc(sizeof(*attributes), GFP_KERNEL);
+	if (!attributes)
 		goto err_attr;
-	}
 
-	vme_attr = kmalloc(sizeof(struct vme_dma_vme), GFP_KERNEL);
-	if (vme_attr == NULL) {
-		printk(KERN_ERR "Unable to allocate memory for VME attributes\n");
+	vme_attr = kmalloc(sizeof(*vme_attr), GFP_KERNEL);
+	if (!vme_attr)
 		goto err_vme;
-	}
 
 	attributes->type = VME_DMA_VME;
 	attributes->private = (void *)vme_attr;
···
 	struct vme_bridge *bridge = list->parent->parent;
 	int retval;
 
-	if (bridge->dma_list_add == NULL) {
+	if (!bridge->dma_list_add) {
 		printk(KERN_WARNING "Link List DMA generation not supported\n");
 		return -EINVAL;
 	}
···
 	struct vme_bridge *bridge = list->parent->parent;
 	int retval;
 
-	if (bridge->dma_list_exec == NULL) {
+	if (!bridge->dma_list_exec) {
 		printk(KERN_ERR "Link List DMA execution not supported\n");
 		return -EINVAL;
 	}
···
 	struct vme_bridge *bridge = list->parent->parent;
 	int retval;
 
-	if (bridge->dma_list_empty == NULL) {
+	if (!bridge->dma_list_empty) {
 		printk(KERN_WARNING "Emptying of Link Lists not supported\n");
 		return -EINVAL;
 	}
···
 
 	call = bridge->irq[level - 1].callback[statid].func;
 	priv_data = bridge->irq[level - 1].callback[statid].priv_data;
-
-	if (call != NULL)
+	if (call)
 		call(level, statid, priv_data);
 	else
 		printk(KERN_WARNING "Spurious VME interrupt, level:%x, vector:%x\n",
···
 	struct vme_bridge *bridge;
 
 	bridge = vdev->bridge;
-	if (bridge == NULL) {
+	if (!bridge) {
 		printk(KERN_ERR "Can't find VME bus\n");
 		return -EINVAL;
 	}
···
 		return -EINVAL;
 	}
 
-	if (bridge->irq_set == NULL) {
+	if (!bridge->irq_set) {
 		printk(KERN_ERR "Configuring interrupts not supported\n");
 		return -EINVAL;
 	}
···
 	struct vme_bridge *bridge;
 
 	bridge = vdev->bridge;
-	if (bridge == NULL) {
+	if (!bridge) {
 		printk(KERN_ERR "Can't find VME bus\n");
 		return;
 	}
···
 		return;
 	}
 
-	if (bridge->irq_set == NULL) {
+	if (!bridge->irq_set) {
 		printk(KERN_ERR "Configuring interrupts not supported\n");
 		return;
 	}
···
 	struct vme_bridge *bridge;
 
 	bridge = vdev->bridge;
-	if (bridge == NULL) {
+	if (!bridge) {
 		printk(KERN_ERR "Can't find VME bus\n");
 		return -EINVAL;
 	}
···
 		return -EINVAL;
 	}
 
-	if (bridge->irq_generate == NULL) {
+	if (!bridge->irq_generate) {
 		printk(KERN_WARNING "Interrupt generation not supported\n");
 		return -EINVAL;
 	}
···
 	struct vme_resource *resource = NULL;
 
 	bridge = vdev->bridge;
-	if (bridge == NULL) {
+	if (!bridge) {
 		printk(KERN_ERR "Can't find VME bus\n");
 		goto err_bus;
 	}
···
 	list_for_each(lm_pos, &bridge->lm_resources) {
 		lm = list_entry(lm_pos,
 			struct vme_lm_resource, list);
-
-		if (lm == NULL) {
+		if (!lm) {
 			printk(KERN_ERR "Registered NULL Location Monitor resource\n");
 			continue;
 		}
···
 	}
 
 	/* Check to see if we found a resource */
-	if (allocated_lm == NULL)
+	if (!allocated_lm)
 		goto err_lm;
 
-	resource = kmalloc(sizeof(struct vme_resource), GFP_KERNEL);
-	if (resource == NULL) {
-		printk(KERN_ERR "Unable to allocate resource structure\n");
+	resource = kmalloc(sizeof(*resource), GFP_KERNEL);
+	if (!resource)
 		goto err_alloc;
-	}
+
 	resource->type = VME_LM;
 	resource->entry = &allocated_lm->list;
 
···
 
 	lm = list_entry(resource->entry, struct vme_lm_resource, list);
 
-	if (bridge->lm_set == NULL) {
+	if (!bridge->lm_set) {
 		printk(KERN_ERR "vme_lm_set not supported\n");
 		return -EINVAL;
 	}
···
 
 	lm = list_entry(resource->entry, struct vme_lm_resource, list);
 
-	if (bridge->lm_get == NULL) {
+	if (!bridge->lm_get) {
 		printk(KERN_ERR "vme_lm_get not supported\n");
 		return -EINVAL;
 	}
···
 
 	lm = list_entry(resource->entry, struct vme_lm_resource, list);
 
-	if (bridge->lm_attach == NULL) {
+	if (!bridge->lm_attach) {
 		printk(KERN_ERR "vme_lm_attach not supported\n");
 		return -EINVAL;
 	}
···
 
 	lm = list_entry(resource->entry, struct vme_lm_resource, list);
 
-	if (bridge->lm_detach == NULL) {
+	if (!bridge->lm_detach) {
 		printk(KERN_ERR "vme_lm_detach not supported\n");
 		return -EINVAL;
 	}
···
 	struct vme_bridge *bridge;
 
 	bridge = vdev->bridge;
-	if (bridge == NULL) {
+	if (!bridge) {
 		printk(KERN_ERR "Can't find VME bus\n");
 		return -EINVAL;
 	}
 
-	if (bridge->slot_get == NULL) {
+	if (!bridge->slot_get) {
 		printk(KERN_WARNING "vme_slot_num not supported\n");
 		return -EINVAL;
 	}
···
 	struct vme_bridge *bridge;
 
 	bridge = vdev->bridge;
-	if (bridge == NULL) {
+	if (!bridge) {
 		pr_err("Can't find VME bus\n");
 		return -EINVAL;
 	}
···
 	struct vme_dev *tmp;
 
 	for (i = 0; i < ndevs; i++) {
-		vdev = kzalloc(sizeof(struct vme_dev), GFP_KERNEL);
+		vdev = kzalloc(sizeof(*vdev), GFP_KERNEL);
 		if (!vdev) {
 			err = -ENOMEM;
 			goto err_devalloc;
···
 
 static int vme_bus_probe(struct device *dev)
 {
-	int retval = -ENODEV;
 	struct vme_driver *driver;
 	struct vme_dev *vdev = dev_to_vme_dev(dev);
 
 	driver = dev->platform_data;
+	if (driver->probe)
+		return driver->probe(vdev);
 
-	if (driver->probe != NULL)
-		retval = driver->probe(vdev);
-
-	return retval;
+	return -ENODEV;
 }
 
 static int vme_bus_remove(struct device *dev)
 {
-	int retval = -ENODEV;
 	struct vme_driver *driver;
 	struct vme_dev *vdev = dev_to_vme_dev(dev);
 
 	driver = dev->platform_data;
+	if (driver->remove)
+		return driver->remove(vdev);
 
-	if (driver->remove != NULL)
-		retval = driver->remove(vdev);
-
-	return retval;
+	return -ENODEV;
 }
 
 struct bus_type vme_bus_type = {