[NET] smc91x: Make smc91x use IRQ resource trigger flags

smc91x is shared between many different platforms.  Each platform needs
to specify the interrupt type, and in some cases the irq type depends
on more than just the build configuration - it depends on runtime
checks.

Rather than throwing this code into the SMC_IRQ_FLAGS definition, provide
a way for these flags to be passed via the IRQ resource itself.

Note that IRQF_TRIGGER_* constants are intentionally defined to correspond
with the IORESOURCE_IRQ_* interrupt type flags, in much the same way that
the low bits of PCI iomem resources correspond with the BAR flag bits.

Also provide a way to configure smc91x to read the IRQ flags from the
resource.  Once all platforms have been converted over (signified
by all definitions of SMC_IRQ_FLAGS being -1) SMC_IRQ_FLAGS should
be removed.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Nicolas Pitre <nico@cam.org>
Acked-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 13 insertions, 6 deletions

diff --git a/drivers/net/smc91x.c b/drivers/net/smc91x.c
index 7da7589d45dd..4020e9e955b3 100644
--- a/drivers/net/smc91x.c
+++ b/drivers/net/smc91x.c
@@ -1775,7 +1775,8 @@ static int __init smc_findirq(void __iomem *ioaddr)
  * o  actually GRAB the irq.
  * o  GRAB the region
  */
-static int __init smc_probe(struct net_device *dev, void __iomem *ioaddr)
+static int __init smc_probe(struct net_device *dev, void __iomem *ioaddr,
+                            unsigned long irq_flags)
 {
         struct smc_local *lp = netdev_priv(dev);
         static int version_printed = 0;
@@ -1941,7 +1942,7 @@ static int __init smc_probe(struct net_device *dev, void __iomem *ioaddr)
         }
 
         /* Grab the IRQ */
-        retval = request_irq(dev->irq, &smc_interrupt, SMC_IRQ_FLAGS, dev->name, dev);
+        retval = request_irq(dev->irq, &smc_interrupt, irq_flags, dev->name, dev);
         if (retval)
                 goto err_out;
 
@@ -2123,8 +2124,9 @@ static void smc_release_datacs(struct platform_device *pdev, struct net_device *
 static int smc_drv_probe(struct platform_device *pdev)
 {
         struct net_device *ndev;
-        struct resource *res;
+        struct resource *res, *ires;
         unsigned int __iomem *addr;
+        unsigned long irq_flags = SMC_IRQ_FLAGS;
         int ret;
 
         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs");
@@ -2150,12 +2152,17 @@ static int smc_drv_probe(struct platform_device *pdev)
         SET_NETDEV_DEV(ndev, &pdev->dev);
 
         ndev->dma = (unsigned char)-1;
-        ndev->irq = platform_get_irq(pdev, 0);
-        if (ndev->irq < 0) {
+
+        ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+        if (!ires) {
                 ret = -ENODEV;
                 goto out_free_netdev;
         }
 
+        ndev->irq = ires->start;
+        if (SMC_IRQ_FLAGS == -1)
+                irq_flags = ires->flags & IRQF_TRIGGER_MASK;
+
         ret = smc_request_attrib(pdev);
         if (ret)
                 goto out_free_netdev;
@@ -2181,7 +2188,7 @@ static int smc_drv_probe(struct platform_device *pdev)
 #endif
 
         platform_set_drvdata(pdev, ndev);
-        ret = smc_probe(ndev, addr);
+        ret = smc_probe(ndev, addr, irq_flags);
         if (ret != 0)
                 goto out_iounmap;