net/smsc911x: fix irq resource allocation failure

When smsc911x uses GPIO as the interrupt controller, and if both are
loaded as modules, we get following error:

"smsc911x: Could not allocate irq resource"

This issue is because of smsc911x using platform_get_resource to get
device tree based irq resource.

commit "9ec36ca (of/irq: do irq resolution in platform_get_irq)" and
commit "7085a7 (drivers: platform: parse IRQ flags from resources)" add
support in platform_get_irq to resolve irq and irq_flags respectively
for both modern device tree and legacy static platform data platforms.

Modify smsc911x driver to use platform_get_irq to pick up irq resource
correctly and use irq_get_trigger_type to get the IRQ trigger flags.

Signed-off-by: Kamlakant Patel <kamlakant.patel@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c
index 41047c9..959aeea 100644 (file)
--- a/drivers/net/ethernet/smsc/smsc911x.c
+++ b/drivers/net/ethernet/smsc/smsc911x.c
@@ -2418,9 +2418,9 @@ static int smsc911x_drv_probe(struct platform_device *pdev)
        struct net_device *dev;
        struct smsc911x_data *pdata;
        struct smsc911x_platform_config *config = dev_get_platdata(&pdev->dev);
-       struct resource *res, *irq_res;
+       struct resource *res;
        unsigned int intcfg = 0;
-       int res_size, irq_flags;
+       int res_size, irq, irq_flags;
        int retval;
 
        res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
@@ -2434,8 +2434,8 @@ static int smsc911x_drv_probe(struct platform_device *pdev)
        }
        res_size = resource_size(res);
 
-       irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-       if (!irq_res) {
+       irq = platform_get_irq(pdev, 0);
+       if (irq <= 0) {
                pr_warn("Could not allocate irq resource\n");
                retval = -ENODEV;
                goto out_0;
@@ -2455,8 +2455,8 @@ static int smsc911x_drv_probe(struct platform_device *pdev)
        SET_NETDEV_DEV(dev, &pdev->dev);
 
        pdata = netdev_priv(dev);
-       dev->irq = irq_res->start;
-       irq_flags = irq_res->flags & IRQF_TRIGGER_MASK;
+       dev->irq = irq;
+       irq_flags = irq_get_trigger_type(irq);
        pdata->ioaddr = ioremap_nocache(res->start, res_size);
 
        pdata->dev = dev;