ax88796: clean up probe and remove function

This way we can remove the struct resource pointers from the private data.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/ax88796.c b/drivers/net/ax88796.c
index fd289e5..e62d0ba 100644 (file)
--- a/drivers/net/ax88796.c
+++ b/drivers/net/ax88796.c
@@ -87,8 +87,6 @@ struct ax_device {
 
        u32 msg_enable;
        void __iomem *map2;
-       struct resource *mem;
-       struct resource *mem2;
        const struct ax_plat_data *plat;
 
        unsigned char running;
@@ -794,25 +792,24 @@ static int ax_init_dev(struct net_device *dev)
        return ret;
 }
 
-static int ax_remove(struct platform_device *_dev)
+static int ax_remove(struct platform_device *pdev)
 {
-       struct net_device *dev = platform_get_drvdata(_dev);
+       struct net_device *dev = platform_get_drvdata(pdev);
        struct ei_device *ei_local = netdev_priv(dev);
-       struct ax_device *ax;
-
-       ax = to_ax_dev(dev);
+       struct ax_device *ax = to_ax_dev(dev);
+       struct resource *mem;
 
        unregister_netdev(dev);
        free_irq(dev->irq, dev);
 
        iounmap(ei_local->mem);
-       release_resource(ax->mem);
-       kfree(ax->mem);
+       mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       release_mem_region(mem->start, resource_size(mem));
 
        if (ax->map2) {
                iounmap(ax->map2);
-               release_resource(ax->mem2);
-               kfree(ax->mem2);
+               mem = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+               release_mem_region(mem->start, resource_size(mem));
        }
 
        free_netdev(dev);
@@ -832,8 +829,8 @@ static int ax_probe(struct platform_device *pdev)
        struct net_device *dev;
        struct ei_device *ei_local;
        struct ax_device *ax;
-       struct resource *res;
-       size_t size;
+       struct resource *irq, *mem, *mem2;
+       resource_size_t mem_size, mem2_size = 0;
        int ret = 0;
 
        dev = ax__alloc_ei_netdev(sizeof(struct ax_device));
@@ -853,24 +850,24 @@ static int ax_probe(struct platform_device *pdev)
        ei_local->rxcr_base = ax->plat->rcr_val;
 
        /* find the platform resources */
-       res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-       if (res == NULL) {
+       irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+       if (!irq) {
                dev_err(&pdev->dev, "no IRQ specified\n");
                ret = -ENXIO;
                goto exit_mem;
        }
 
-       dev->irq = res->start;
-       ax->irqflags = res->flags & IRQF_TRIGGER_MASK;
+       dev->irq = irq->start;
+       ax->irqflags = irq->flags & IRQF_TRIGGER_MASK;
 
-       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       if (res == NULL) {
+       mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       if (!mem) {
                dev_err(&pdev->dev, "no MEM specified\n");
                ret = -ENXIO;
                goto exit_mem;
        }
 
-       size = (res->end - res->start) + 1;
+       mem_size = resource_size(mem);
 
        /*
         * setup the register offsets from either the platform data or
@@ -881,50 +878,43 @@ static int ax_probe(struct platform_device *pdev)
        else {
                ei_local->reg_offset = ax->reg_offsets;
                for (ret = 0; ret < 0x18; ret++)
-                       ax->reg_offsets[ret] = (size / 0x18) * ret;
+                       ax->reg_offsets[ret] = (mem_size / 0x18) * ret;
        }
 
-       ax->mem = request_mem_region(res->start, size, pdev->name);
-       if (ax->mem == NULL) {
+       if (!request_mem_region(mem->start, mem_size, pdev->name)) {
                dev_err(&pdev->dev, "cannot reserve registers\n");
                ret = -ENXIO;
                goto exit_mem;
        }
 
-       ei_local->mem = ioremap(res->start, size);
+       ei_local->mem = ioremap(mem->start, mem_size);
        dev->base_addr = (unsigned long)ei_local->mem;
 
        if (ei_local->mem == NULL) {
-               dev_err(&pdev->dev, "Cannot ioremap area (%08llx,%08llx)\n",
-                       (unsigned long long)res->start,
-                       (unsigned long long)res->end);
+               dev_err(&pdev->dev, "Cannot ioremap area %pR\n", mem);
 
                ret = -ENXIO;
                goto exit_req;
        }
 
        /* look for reset area */
-
-       res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-       if (res == NULL) {
+       mem2 = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+       if (!mem2) {
                if (!ax->plat->reg_offsets) {
                        for (ret = 0; ret < 0x20; ret++)
-                               ax->reg_offsets[ret] = (size / 0x20) * ret;
+                               ax->reg_offsets[ret] = (mem_size / 0x20) * ret;
                }
-
-               ax->map2 = NULL;
        } else {
-               size = (res->end - res->start) + 1;
+               mem2_size = resource_size(mem2);
 
-               ax->mem2 = request_mem_region(res->start, size, pdev->name);
-               if (ax->mem2 == NULL) {
+               if (!request_mem_region(mem2->start, mem2_size, pdev->name)) {
                        dev_err(&pdev->dev, "cannot reserve registers\n");
                        ret = -ENXIO;
                        goto exit_mem1;
                }
 
-               ax->map2 = ioremap(res->start, size);
-               if (ax->map2 == NULL) {
+               ax->map2 = ioremap(mem2->start, mem2_size);
+               if (!ax->map2) {
                        dev_err(&pdev->dev, "cannot map reset register\n");
                        ret = -ENXIO;
                        goto exit_mem2;
@@ -934,26 +924,23 @@ static int ax_probe(struct platform_device *pdev)
        }
 
        /* got resources, now initialise and register device */
-
        ret = ax_init_dev(dev);
        if (!ret)
                return 0;
 
-       if (ax->map2 == NULL)
+       if (!ax->map2)
                goto exit_mem1;
 
        iounmap(ax->map2);
 
  exit_mem2:
-       release_resource(ax->mem2);
-       kfree(ax->mem2);
+       release_mem_region(mem2->start, mem2_size);
 
  exit_mem1:
        iounmap(ei_local->mem);
 
  exit_req:
-       release_resource(ax->mem);
-       kfree(ax->mem);
+       release_mem_region(mem->start, mem_size);
 
  exit_mem:
        free_netdev(dev);