1 files changed, 7 insertions, 0 deletions

diff --git a/arch/mips/pci/ops-mace.c b/arch/mips/pci/ops-mace.c
index e95881897ec9..1cfb5588699f 100644
--- a/arch/mips/pci/ops-mace.c
+++ b/arch/mips/pci/ops-mace.c
@@ -61,6 +61,13 @@ mace_pci_read_config(struct pci_bus *bus, unsigned int devfn,
         /* ack possible master abort */
         mace->pci.error &= ~MACEPCI_ERROR_MASTER_ABORT;
         mace->pci.control = control;
+        /*
+         * someone forgot to set the ultra bit for the onboard
+         * scsi chips; we fake it here
+         */
+        if (bus->number == 0 && reg == 0x40 && size == 4 &&
+            (devfn == (1 << 3) || devfn == (2 << 3)))
+                *val |= 0x1000;
 
         DPRINTK("read%d: reg=%08x,val=%02x\n", size * 8, reg, *val);