[PATCH] DM9000 interrupt is hardware dependant

["Jürgen Schindele" <linux@schindele.name>]

Hi developers,
i made a patch for an PXA270-evalboard with DM9000
ethernet contoller. The Interrupt can be high- or low-
active dependant of the wiring of the MDC-(57)pin.

Because of this hardware dependency you shoud be able
to configure this behaviour in "struct resource dm9000_resources[]"

Please comment an review my patch which is attached here

Thanksalot
Jürgen Schindele

diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c
index 24996da..0a71f7b 100644
--- a/drivers/net/dm9000.c
+++ b/drivers/net/dm9000.c
@@ -598,10 +598,11 @@ static int
 dm9000_open(struct net_device *dev)
 {
        board_info_t *db = (board_info_t *) dev->priv;
+       unsigned long sa_flags = resource_sa_flags(db->irq_res);

        PRINTK2("entering dm9000_open\n");

-       if (request_irq(dev->irq, &dm9000_interrupt, SA_SHIRQ, dev->name, dev))
+       if (request_irq(dev->irq, &dm9000_interrupt, SA_SHIRQ | sa_flags, dev->name, dev))
                return -EAGAIN;

        /* Initialize DM9000 board */
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index cd6bd00..2eebd91 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -54,6 +54,12 @@ #define IORESOURCE_IRQ_LOWEDGE               (1<<1)
 #define IORESOURCE_IRQ_HIGHLEVEL       (1<<2)
 #define IORESOURCE_IRQ_LOWLEVEL                (1<<3)

+/* this macro gets back SA_TRIGGER_* bits
+ * defined in include/linux/signal.h from
+ * resource->flags which are the same as
+ * IORESOURCE_IRQ_* bits */
+#define resource_sa_flags(res)         ((res)->flags & 0xf)
+
 /* ISA PnP DMA specific bits (IORESOURCE_BITS) */
 #define IORESOURCE_DMA_TYPE_MASK       (3<<0)
 #define IORESOURCE_DMA_8BIT            (0<<0)