1 files changed, 36 insertions, 35 deletions

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 76bfcba250..10c5779634 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -178,18 +178,19 @@ int platform_get_irq_optional(struct platform_device *dev, unsigned int num)
 	ret = dev->archdata.irqs[num];
 	goto out;
 #else
+	struct fwnode_handle *fwnode = dev_fwnode(&dev->dev);
 	struct resource *r;
 
-	if (IS_ENABLED(CONFIG_OF_IRQ) && dev->dev.of_node) {
-		ret = of_irq_get(dev->dev.of_node, num);
+	if (is_of_node(fwnode)) {
+		ret = of_irq_get(to_of_node(fwnode), num);
 		if (ret > 0 || ret == -EPROBE_DEFER)
 			goto out;
 	}
 
 	r = platform_get_resource(dev, IORESOURCE_IRQ, num);
-	if (has_acpi_companion(&dev->dev)) {
+	if (is_acpi_device_node(fwnode)) {
 		if (r && r->flags & IORESOURCE_DISABLED) {
-			ret = acpi_irq_get(ACPI_HANDLE(&dev->dev), num, r);
+			ret = acpi_irq_get(ACPI_HANDLE_FWNODE(fwnode), num, r);
 			if (ret)
 				goto out;
 		}
@@ -222,8 +223,8 @@ int platform_get_irq_optional(struct platform_device *dev, unsigned int num)
 	 * the device will only expose one IRQ, and this fallback
 	 * allows a common code path across either kind of resource.
 	 */
-	if (num == 0 && has_acpi_companion(&dev->dev)) {
-		ret = acpi_dev_gpio_irq_get(ACPI_COMPANION(&dev->dev), num);
+	if (num == 0 && is_acpi_device_node(fwnode)) {
+		ret = acpi_dev_gpio_irq_get(to_acpi_device_node(fwnode), num);
 		/* Our callers expect -ENXIO for missing IRQs. */
 		if (ret >= 0 || ret == -EPROBE_DEFER)
 			goto out;
@@ -291,7 +292,7 @@ EXPORT_SYMBOL_GPL(platform_irq_count);
 
 struct irq_affinity_devres {
 	unsigned int count;
-	unsigned int irq[];
+	unsigned int irq[] __counted_by(count);
 };
 
 static void platform_disable_acpi_irq(struct platform_device *pdev, int index)
@@ -312,7 +313,7 @@ static void devm_platform_get_irqs_affinity_release(struct device *dev,
 	for (i = 0; i < ptr->count; i++) {
 		irq_dispose_mapping(ptr->irq[i]);
 
-		if (has_acpi_companion(dev))
+		if (is_acpi_device_node(dev_fwnode(dev)))
 			platform_disable_acpi_irq(to_platform_device(dev), i);
 	}
 }
@@ -655,23 +656,21 @@ EXPORT_SYMBOL_GPL(platform_device_add_data);
  */
 int platform_device_add(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	u32 i;
 	int ret;
 
-	if (!pdev)
-		return -EINVAL;
-
-	if (!pdev->dev.parent)
-		pdev->dev.parent = &platform_bus;
+	if (!dev->parent)
+		dev->parent = &platform_bus;
 
-	pdev->dev.bus = &platform_bus_type;
+	dev->bus = &platform_bus_type;
 
 	switch (pdev->id) {
 	default:
-		dev_set_name(&pdev->dev, "%s.%d", pdev->name,  pdev->id);
+		dev_set_name(dev, "%s.%d", pdev->name,  pdev->id);
 		break;
 	case PLATFORM_DEVID_NONE:
-		dev_set_name(&pdev->dev, "%s", pdev->name);
+		dev_set_name(dev, "%s", pdev->name);
 		break;
 	case PLATFORM_DEVID_AUTO:
 		/*
@@ -681,10 +680,10 @@ int platform_device_add(struct platform_device *pdev)
 		 */
 		ret = ida_alloc(&platform_devid_ida, GFP_KERNEL);
 		if (ret < 0)
-			goto err_out;
+			return ret;
 		pdev->id = ret;
 		pdev->id_auto = true;
-		dev_set_name(&pdev->dev, "%s.%d.auto", pdev->name, pdev->id);
+		dev_set_name(dev, "%s.%d.auto", pdev->name, pdev->id);
 		break;
 	}
 
@@ -692,7 +691,7 @@ int platform_device_add(struct platform_device *pdev)
 		struct resource *p, *r = &pdev->resource[i];
 
 		if (r->name == NULL)
-			r->name = dev_name(&pdev->dev);
+			r->name = dev_name(dev);
 
 		p = r->parent;
 		if (!p) {
@@ -705,18 +704,20 @@ int platform_device_add(struct platform_device *pdev)
 		if (p) {
 			ret = insert_resource(p, r);
 			if (ret) {
-				dev_err(&pdev->dev, "failed to claim resource %d: %pR\n", i, r);
+				dev_err(dev, "failed to claim resource %d: %pR\n", i, r);
 				goto failed;
 			}
 		}
 	}
 
-	pr_debug("Registering platform device '%s'. Parent at %s\n",
-		 dev_name(&pdev->dev), dev_name(pdev->dev.parent));
+	pr_debug("Registering platform device '%s'. Parent at %s\n", dev_name(dev),
+		 dev_name(dev->parent));
 
-	ret = device_add(&pdev->dev);
-	if (ret == 0)
-		return ret;
+	ret = device_add(dev);
+	if (ret)
+		goto failed;
+
+	return 0;
 
  failed:
 	if (pdev->id_auto) {
@@ -730,7 +731,6 @@ int platform_device_add(struct platform_device *pdev)
 			release_resource(r);
 	}
 
- err_out:
 	return ret;
 }
 EXPORT_SYMBOL_GPL(platform_device_add);
@@ -1447,21 +1447,22 @@ static void platform_shutdown(struct device *_dev)
 static int platform_dma_configure(struct device *dev)
 {
 	struct platform_driver *drv = to_platform_driver(dev->driver);
+	struct fwnode_handle *fwnode = dev_fwnode(dev);
 	enum dev_dma_attr attr;
 	int ret = 0;
 
-	if (dev->of_node) {
-		ret = of_dma_configure(dev, dev->of_node, true);
-	} else if (has_acpi_companion(dev)) {
-		attr = acpi_get_dma_attr(to_acpi_device_node(dev->fwnode));
+	if (is_of_node(fwnode)) {
+		ret = of_dma_configure(dev, to_of_node(fwnode), true);
+	} else if (is_acpi_device_node(fwnode)) {
+		attr = acpi_get_dma_attr(to_acpi_device_node(fwnode));
 		ret = acpi_dma_configure(dev, attr);
 	}
+	if (ret || drv->driver_managed_dma)
+		return ret;
 
-	if (!ret && !drv->driver_managed_dma) {
-		ret = iommu_device_use_default_domain(dev);
-		if (ret)
-			arch_teardown_dma_ops(dev);
-	}
+	ret = iommu_device_use_default_domain(dev);
+	if (ret)
+		arch_teardown_dma_ops(dev);
 
 	return ret;
 }