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SubjectUIO: don't check irq_enabled flag in uio_cif irq handler
Below patch ignores INT1_ENABLED flag in the uio_cif irq handler.

On a Hilscher DeviceNet Slave card, the INT_ENABLE flag is (probably) reseted
by the firmware. Without this patch, every interrupt produced by this card is
dropped.

This patch is tested and works with a DeviceNet Slave and a Profibus Slave card.

Signed-off-by: Manuel Traut <manut@linutronix.de>

--- linux-git/drivers/uio/uio_cif.c 2008-10-28 23:42:18.000000000 +0100
+++ uio/drivers/uio/uio_cif.c 2008-10-28 23:41:43.000000000 +0100
@@ -18,7 +18,6 @@
#define PLX9030_INTCSR 0x4C
#define INTSCR_INT1_ENABLE 0x01
#define INTSCR_INT1_STATUS 0x04
-#define INT1_ENABLED_AND_ACTIVE (INTSCR_INT1_ENABLE | INTSCR_INT1_STATUS)

#define PCI_SUBVENDOR_ID_PEP 0x1518
#define CIF_SUBDEVICE_PROFIBUS 0x430
@@ -30,8 +29,8 @@
void __iomem *plx_intscr = dev_info->mem[0].internal_addr
+ PLX9030_INTCSR;

- if ((ioread8(plx_intscr) & INT1_ENABLED_AND_ACTIVE)
- != INT1_ENABLED_AND_ACTIVE)
+ if ((ioread8(plx_intscr) & INT1_STATUS)
+ != INT1_STATUS)
return IRQ_NONE;

/* Disable interrupt */

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