Merge branch 'unnecessary_resource_check'

Varka Bhadram says:

====================
cleanup on resource check

This series removes the duplication of sanity check for
platform_get_resource() return resource. It will be checked
with devm_ioremap_resource()

changes since v2:
- Merge #1 and #2 patches into single patch
- remove the comment

changes since v1:
- remove NULL dereference on resource_size()
====================

Signed-off-by: David S. Miller <[e-mail]>

drivers/net/ethernet/apm/xgene/xgene_enet_main.c

···
 	ndev = pdata->ndev;
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "enet_csr");
-	if (!res) {
-		dev_err(dev, "Resource enet_csr not defined\n");
-		return -ENODEV;
-	}
 	pdata->base_addr = devm_ioremap_resource(dev, res);
 	if (IS_ERR(pdata->base_addr)) {
 		dev_err(dev, "Unable to retrieve ENET Port CSR region\n");
···
 	}
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ring_csr");
-	if (!res) {
-		dev_err(dev, "Resource ring_csr not defined\n");
-		return -ENODEV;
-	}
 	pdata->ring_csr_addr = devm_ioremap_resource(dev, res);
 	if (IS_ERR(pdata->ring_csr_addr)) {
 		dev_err(dev, "Unable to retrieve ENET Ring CSR region\n");
···
 	}
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ring_cmd");
-	if (!res) {
-		dev_err(dev, "Resource ring_cmd not defined\n");
-		return -ENODEV;
-	}
 	pdata->ring_cmd_addr = devm_ioremap_resource(dev, res);
 	if (IS_ERR(pdata->ring_cmd_addr)) {
 		dev_err(dev, "Unable to retrieve ENET Ring command region\n");

drivers/net/ethernet/marvell/pxa168_eth.c

···
 	pep = netdev_priv(dev);
 	pep->dev = dev;
 	pep->clk = clk;
+
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (res == NULL) {
-		err = -ENODEV;
-		goto err_netdev;
-	}
 	pep->base = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(pep->base)) {
 		err = -ENOMEM;
 		goto err_netdev;
 	}
+
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 	BUG_ON(!res);
 	dev->irq = res->start;

drivers/net/ethernet/renesas/sh_eth.c

···
 
 	/* get base addr */
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (unlikely(res == NULL)) {
-		dev_err(&pdev->dev, "invalid resource\n");
-		return -EINVAL;
-	}
 
 	ndev = alloc_etherdev(sizeof(struct sh_eth_private));
 	if (!ndev)
···
 	pm_runtime_enable(&pdev->dev);
 	pm_runtime_get_sync(&pdev->dev);
 
-	/* The sh Ether-specific entries in the device structure. */
-	ndev->base_addr = res->start;
 	devno = pdev->id;
 	if (devno < 0)
 		devno = 0;
···
 		ret = PTR_ERR(mdp->addr);
 		goto out_release;
 	}
+
+	ndev->base_addr = res->start;
 
 	spin_lock_init(&mdp->lock);
 	mdp->pdev = pdev;

drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c

···
 
 	/* Get memory resource */
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		goto err_out;
-
 	addr = devm_ioremap_resource(dev, res);
 	if (IS_ERR(addr))
 		return PTR_ERR(addr);

drivers/net/ethernet/wiznet/w5100.c

···
 	}
 
 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!mem)
-		return -ENXIO;
-	mem_size = resource_size(mem);
-
 	priv->base = devm_ioremap_resource(&pdev->dev, mem);
 	if (IS_ERR(priv->base))
 		return PTR_ERR(priv->base);
+
+	mem_size = resource_size(mem);
 
 	spin_lock_init(&priv->reg_lock);
 	priv->indirect = mem_size < W5100_BUS_DIRECT_SIZE;

drivers/net/ethernet/wiznet/w5300.c

···
 	}
 
 	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!mem)
-		return -ENXIO;
-	mem_size = resource_size(mem);
-
 	priv->base = devm_ioremap_resource(&pdev->dev, mem);
 	if (IS_ERR(priv->base))
 		return PTR_ERR(priv->base);
+
+	mem_size = resource_size(mem);
 
 	spin_lock_init(&priv->reg_lock);
 	priv->indirect = mem_size < W5300_BUS_DIRECT_SIZE;