[PATCH 3/4] hw/pci-host/prep: Fix PCI swizzling in map_irq()

[Philippe Mathieu-Daudé]

In commit a01d8cadadf we changed the number of IRQs to 4 but
forgot to update the map_irq() function. Do it now.

Fixes: a01d8cadadf ("Fix memory corruption ... in PreP emulation")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
Cc: Jocelyn Mayer <l_indien@magic.fr>
Cc: Julian Seward <julian@valgrind.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/pci-host/prep.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/pci-host/prep.c b/hw/pci-host/prep.c
index 064593d1e52..2224135fedb 100644
--- a/hw/pci-host/prep.c
+++ b/hw/pci-host/prep.c
@@ -195,7 +195,7 @@ static const MemoryRegionOps raven_io_ops = {
 
 static int raven_map_irq(PCIDevice *pci_dev, int irq_num)
 {
-    return (irq_num + (pci_dev->devfn >> 3)) & 1;
+    return (irq_num + (pci_dev->devfn >> 3)) & 3;
 }
 
 static void raven_set_irq(void *opaque, int irq_num, int level)
-- 
2.26.2