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Commit 7a3e2585 authored by Michal Simek's avatar Michal Simek Committed by David S. Miller
Browse files

net: emaclite: Use platform resource table 



Read data directly from platform recource table
and do not use of_irq_to_resource().
Also use devm_request_and_ioremap() for probe
functions simplification.

Signed-off-by: default avatarMichal Simek <michal.simek@xilinx.com>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 15dd16c2

drivers/net/ethernet/xilinx/xilinx_emaclite.c

+22 −45
Original line number Diff line number Diff line
@@ -1074,13 +1074,14 @@ static int xemaclite_send(struct sk_buff *orig_skb, struct net_device *dev) 
 * This function un maps the IO region of the Emaclite device and frees the net

 * device.

 */

static void xemaclite_remove_ndev(struct net_device *ndev)

static void xemaclite_remove_ndev(struct net_device *ndev,

				  struct platform_device *pdev)

{

	if (ndev) {

		struct net_local *lp = netdev_priv(ndev);



		if (lp->base_addr)

			iounmap((void __iomem __force *) (lp->base_addr));

			devm_iounmap(&pdev->dev, lp->base_addr);

		free_netdev(ndev);

	}

}
@@ -1126,8 +1127,7 @@ static struct net_device_ops xemaclite_netdev_ops; 
 */

static int xemaclite_of_probe(struct platform_device *ofdev)

{

	struct resource r_irq; /* Interrupt resources */

	struct resource r_mem; /* IO mem resources */

	struct resource *res;

	struct net_device *ndev = NULL;

	struct net_local *lp = NULL;

	struct device *dev = &ofdev->dev;
@@ -1137,20 +1137,6 @@ static int xemaclite_of_probe(struct platform_device *ofdev) 


	dev_info(dev, "Device Tree Probing\n");



	/* Get iospace for the device */

	rc = of_address_to_resource(ofdev->dev.of_node, 0, &r_mem);

	if (rc) {

		dev_err(dev, "invalid address\n");

		return rc;

	}



	/* Get IRQ for the device */

	rc = of_irq_to_resource(ofdev->dev.of_node, 0, &r_irq);

	if (!rc) {

		dev_err(dev, "no IRQ found\n");

		return rc;

	}



	/* Create an ethernet device instance */

	ndev = alloc_etherdev(sizeof(struct net_local));

	if (!ndev)
@@ -1159,29 +1145,25 @@ static int xemaclite_of_probe(struct platform_device *ofdev) 
	dev_set_drvdata(dev, ndev);

	SET_NETDEV_DEV(ndev, &ofdev->dev);



	ndev->irq = r_irq.start;

	ndev->mem_start = r_mem.start;

	ndev->mem_end = r_mem.end;



	lp = netdev_priv(ndev);

	lp->ndev = ndev;



	if (!request_mem_region(ndev->mem_start,

				ndev->mem_end - ndev->mem_start + 1,

				DRIVER_NAME)) {

		dev_err(dev, "Couldn't lock memory region at %p\n",

			(void *)ndev->mem_start);

		rc = -EBUSY;

		goto error2;

	/* Get IRQ for the device */

	res = platform_get_resource(ofdev, IORESOURCE_IRQ, 0);

	if (!res) {

		dev_err(dev, "no IRQ found\n");

		goto error;

	}



	/* Get the virtual base address for the device */

	lp->base_addr = ioremap(r_mem.start, resource_size(&r_mem));

	if (NULL == lp->base_addr) {

		dev_err(dev, "EmacLite: Could not allocate iomem\n");

		rc = -EIO;

		goto error1;

	}

	ndev->irq = res->start;



	res = platform_get_resource(ofdev, IORESOURCE_MEM, 0);

	lp->base_addr = devm_request_and_ioremap(&ofdev->dev, res);

	if (!lp->base_addr)

		goto error;



	ndev->mem_start = res->start;

	ndev->mem_end = res->end;



	spin_lock_init(&lp->reset_lock);

	lp->next_tx_buf_to_use = 0x0;
@@ -1219,7 +1201,7 @@ static int xemaclite_of_probe(struct platform_device *ofdev) 
	if (rc) {

		dev_err(dev,

			"Cannot register network device, aborting\n");

		goto error1;

		goto error;

	}



	dev_info(dev,
@@ -1228,11 +1210,8 @@ static int xemaclite_of_probe(struct platform_device *ofdev) 
		 (unsigned int __force)lp->base_addr, ndev->irq);

	return 0;



error1:

	release_mem_region(ndev->mem_start, resource_size(&r_mem));



error2:

	xemaclite_remove_ndev(ndev);

error:

	xemaclite_remove_ndev(ndev, ofdev);

	return rc;

}
@@ -1267,9 +1246,7 @@ static int xemaclite_of_remove(struct platform_device *of_dev) 
		of_node_put(lp->phy_node);

	lp->phy_node = NULL;



	release_mem_region(ndev->mem_start, ndev->mem_end-ndev->mem_start + 1);



	xemaclite_remove_ndev(ndev);

	xemaclite_remove_ndev(ndev, of_dev);

	dev_set_drvdata(dev, NULL);



	return 0;