I have a question about acpi resource.

My device need the resource:

    Name(_CRS, ResourceTemplate() {

      IRQ(Edge, ActiveHigh, Exclusive) {3}

      Memory32Fixed(ReadWrite, 0xFEDC2000, 0x1000)

    })

In Win8's device manager, I got error "This device cannot find enough free resources that it can use."

I reserve resource (0xFEDC2000 - 0xFEDC2FFF) using flag resource->flags = IORESOURCE_MEM | IORESOURCE_RESERVE | IORESOURCE_FIXED | IORESOURCE_STORED |  IORESOURCE_ASSIGNED; I still got this error.

I have 2 questions:

1) Do I need to reserve MMIO for (0xFEDC2000 - 0xFEDC2FFF)?

2) Do I need to do some thing for IRQ(Edge, ActiveHigh, Exclusive) {3}?

Any replay is appreciated!