2 files changed, 13 insertions, 35 deletions

diff --git a/drivers/net/can/c_can/c_can_pci.c b/drivers/net/can/c_can/c_can_pci.c
index 5d11e0e4225..7be393c96b1 100644
--- a/drivers/net/can/c_can/c_can_pci.c
+++ b/drivers/net/can/c_can/c_can_pci.c
@@ -270,7 +270,8 @@ static struct c_can_pci_data c_can_pch = {
 	PCI_DEVICE(_vend, _dev),			\
 	.driver_data = (unsigned long)&_driverdata,	\
 }
-static DEFINE_PCI_DEVICE_TABLE(c_can_pci_tbl) = {
+
+static const struct pci_device_id c_can_pci_tbl[] = {
 	C_CAN_ID(PCI_VENDOR_ID_STMICRO, PCI_DEVICE_ID_STMICRO_CAN,
 		 c_can_sta2x11),
 	C_CAN_ID(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PCH_CAN,
diff --git a/drivers/net/can/c_can/c_can_platform.c b/drivers/net/can/c_can/c_can_platform.c
index 12430be6448..109cb44291f 100644
--- a/drivers/net/can/c_can/c_can_platform.c
+++ b/drivers/net/can/c_can/c_can_platform.c
@@ -208,40 +208,31 @@ static int c_can_plat_probe(struct platform_device *pdev)
 	}
 
 	/* get the appropriate clk */
-	clk = clk_get(&pdev->dev, NULL);
+	clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(clk)) {
-		dev_err(&pdev->dev, "no clock defined\n");
-		ret = -ENODEV;
+		ret = PTR_ERR(clk);
 		goto exit;
 	}
 
 	/* get the platform data */
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	irq = platform_get_irq(pdev, 0);
-	if (!mem || irq <= 0) {
+	if (irq <= 0) {
 		ret = -ENODEV;
-		goto exit_free_clk;
-	}
-
-	if (!request_mem_region(mem->start, resource_size(mem),
-				KBUILD_MODNAME)) {
-		dev_err(&pdev->dev, "resource unavailable\n");
-		ret = -ENODEV;
-		goto exit_free_clk;
+		goto exit;
 	}
 
-	addr = ioremap(mem->start, resource_size(mem));
-	if (!addr) {
-		dev_err(&pdev->dev, "failed to map can port\n");
-		ret = -ENOMEM;
-		goto exit_release_mem;
+	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	addr = devm_ioremap_resource(&pdev->dev, mem);
+	if (IS_ERR(addr)) {
+		ret =  PTR_ERR(addr);
+		goto exit;
 	}
 
 	/* allocate the c_can device */
 	dev = alloc_c_can_dev();
 	if (!dev) {
 		ret = -ENOMEM;
-		goto exit_iounmap;
+		goto exit;
 	}
 
 	priv = netdev_priv(dev);
@@ -289,7 +280,7 @@ static int c_can_plat_probe(struct platform_device *pdev)
 
 		priv->raminit_ctrlreg = devm_ioremap(&pdev->dev, res->start,
 						     resource_size(res));
-		if (IS_ERR(priv->raminit_ctrlreg) || priv->instance < 0)
+		if (!priv->raminit_ctrlreg || priv->instance < 0)
 			dev_info(&pdev->dev, "control memory is not used for raminit\n");
 		else
 			priv->raminit = c_can_hw_raminit_ti;
@@ -322,12 +313,6 @@ static int c_can_plat_probe(struct platform_device *pdev)
 
 exit_free_device:
 	free_c_can_dev(dev);
-exit_iounmap:
-	iounmap(addr);
-exit_release_mem:
-	release_mem_region(mem->start, resource_size(mem));
-exit_free_clk:
-	clk_put(clk);
 exit:
 	dev_err(&pdev->dev, "probe failed\n");
 
@@ -337,18 +322,10 @@ exit:
 static int c_can_plat_remove(struct platform_device *pdev)
 {
 	struct net_device *dev = platform_get_drvdata(pdev);
-	struct c_can_priv *priv = netdev_priv(dev);
-	struct resource *mem;
 
 	unregister_c_can_dev(dev);
 
 	free_c_can_dev(dev);
-	iounmap(priv->base);
-
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	release_mem_region(mem->start, resource_size(mem));
-
-	clk_put(priv->priv);
 
 	return 0;
 }