target/linux/brcm63xx/patches-3.8/019-bcm63xx_enet-use-managed-io-memory-allocations.patch

   1 From 80b0356aea30e9fc9e075d31c2bf37e7cbfea8c9 Mon Sep 17 00:00:00 2001
   2 From: Jonas Gorski <jogo@openwrt.org>
   3 Date: Sun, 10 Mar 2013 13:59:55 +0100
   4 Subject: [PATCH 1/3] bcm63xx_enet: use managed io memory allocations
   5
   6 Signed-off-by: Jonas Gorski <jogo@openwrt.org>
   7 ---
   8  drivers/net/ethernet/broadcom/bcm63xx_enet.c |   43 +++++---------------------
   9  1 file changed, 7 insertions(+), 36 deletions(-)
  10
  11 --- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
  12 +++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
  13 @@ -1620,7 +1620,6 @@ static int bcm_enet_probe(struct platfor
  14         struct resource *res_mem, *res_irq, *res_irq_rx, *res_irq_tx;
  15         struct mii_bus *bus;
  16         const char *clk_name;
  17 -       unsigned int iomem_size;
  18         int i, ret;
  19
  20         /* stop if shared driver failed, assume driver->probe will be
  21 @@ -1645,17 +1644,12 @@ static int bcm_enet_probe(struct platfor
  22         if (ret)
  23                 goto out;
  24
  25 -       iomem_size = resource_size(res_mem);
  26 -       if (!request_mem_region(res_mem->start, iomem_size, "bcm63xx_enet")) {
  27 -               ret = -EBUSY;
  28 -               goto out;
  29 -       }
  30 -
  31 -       priv->base = ioremap(res_mem->start, iomem_size);
  32 +       priv->base = devm_request_and_ioremap(&pdev->dev, res_mem);
  33         if (priv->base == NULL) {
  34                 ret = -ENOMEM;
  35 -               goto out_release_mem;
  36 +               goto out;
  37         }
  38 +
  39         dev->irq = priv->irq = res_irq->start;
  40         priv->irq_rx = res_irq_rx->start;
  41         priv->irq_tx = res_irq_tx->start;
  42 @@ -1675,7 +1669,7 @@ static int bcm_enet_probe(struct platfor
  43         priv->mac_clk = clk_get(&pdev->dev, clk_name);
  44         if (IS_ERR(priv->mac_clk)) {
  45                 ret = PTR_ERR(priv->mac_clk);
  46 -               goto out_unmap;
  47 +               goto out;
  48         }
  49         clk_enable(priv->mac_clk);
  50
  51 @@ -1815,12 +1809,6 @@ out_uninit_hw:
  52  out_put_clk_mac:
  53         clk_disable(priv->mac_clk);
  54         clk_put(priv->mac_clk);
  55 -
  56 -out_unmap:
  57 -       iounmap(priv->base);
  58 -
  59 -out_release_mem:
  60 -       release_mem_region(res_mem->start, iomem_size);
  61  out:
  62         free_netdev(dev);
  63         return ret;
  64 @@ -1834,7 +1822,6 @@ static int bcm_enet_remove(struct platfo
  65  {
  66         struct bcm_enet_priv *priv;
  67         struct net_device *dev;
  68 -       struct resource *res;
  69
  70         /* stop netdevice */
  71         dev = platform_get_drvdata(pdev);
  72 @@ -1857,11 +1844,6 @@ static int bcm_enet_remove(struct platfo
  73                                        bcm_enet_mdio_write_mii);
  74         }
  75
  76 -       /* release device resources */
  77 -       iounmap(priv->base);
  78 -       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  79 -       release_mem_region(res->start, resource_size(res));
  80 -
  81         /* disable hw block clocks */
  82         if (priv->phy_clk) {
  83                 clk_disable(priv->phy_clk);
  84 @@ -1890,31 +1872,20 @@ struct platform_driver bcm63xx_enet_driv
  85  static int bcm_enet_shared_probe(struct platform_device *pdev)
  86  {
  87         struct resource *res;
  88 -       unsigned int iomem_size;
  89
  90         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  91         if (!res)
  92                 return -ENODEV;
  93
  94 -       iomem_size = resource_size(res);
  95 -       if (!request_mem_region(res->start, iomem_size, "bcm63xx_enet_dma"))
  96 -               return -EBUSY;
  97 -
  98 -       bcm_enet_shared_base = ioremap(res->start, iomem_size);
  99 -       if (!bcm_enet_shared_base) {
 100 -               release_mem_region(res->start, iomem_size);
 101 +       bcm_enet_shared_base = devm_request_and_ioremap(&pdev->dev, res);
 102 +       if (!bcm_enet_shared_base)
 103                 return -ENOMEM;
 104 -       }
 105 +
 106         return 0;
 107  }
 108
 109  static int bcm_enet_shared_remove(struct platform_device *pdev)
 110  {
 111 -       struct resource *res;
 112 -
 113 -       iounmap(bcm_enet_shared_base);
 114 -       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 115 -       release_mem_region(res->start, resource_size(res));
 116         return 0;
 117  }
 118