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: Michal Simek <michal.simek@xilinx.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 22 insertions, 45 deletions

diff --git a/drivers/net/ethernet/xilinx/xilinx_emaclite.c b/drivers/net/ethernet/xilinx/xilinx_emaclite.c
index aaadf7e551df..c4d8aeffb4ba 100644
--- a/drivers/net/ethernet/xilinx/xilinx_emaclite.c
+++ b/drivers/net/ethernet/xilinx/xilinx_emaclite.c
@@ -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;