alpha: more fixes for specific machine types

arch/alpha/kernel/sys_sx164.c

	Earlier firmware revisions need MVI fix as well.

arch/alpha/kernel/sys_nautilus.c

	On UP1500 firmware reports wrong AGP IRQ (10 instead of 5).
	This causes interrupt storm if there is a PCI device that
	uses IRQ 5.

Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/alpha/kernel/sys_nautilus.c b/arch/alpha/kernel/sys_nautilus.c
index e7594a7cf585..920196bcbb61 100644
--- a/arch/alpha/kernel/sys_nautilus.c
+++ b/arch/alpha/kernel/sys_nautilus.c
@@ -70,6 +70,12 @@ nautilus_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
         /* Preserve the IRQ set up by the console.  */
 
         u8 irq;
+        /* UP1500: AGP INTA is actually routed to IRQ 5, not IRQ 10 as
+           console reports. Check the device id of AGP bridge to distinguish
+           UP1500 from UP1000/1100. Note: 'pin' is 2 due to bridge swizzle. */
+        if (slot == 1 && pin == 2 &&
+            dev->bus->self && dev->bus->self->device == 0x700f)
+                return 5;
         pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
         return irq;
 }