diff -ruN linux-2.6.23.9.orig/drivers/scsi/dpt_i2o.c linux-2.6.23.9/drivers/scsi/dpt_i2o.c
--- linux-2.6.23.9.orig/drivers/scsi/dpt_i2o.c	2007-11-26 18:51:43.000000000 +0100
+++ linux-2.6.23.9/drivers/scsi/dpt_i2o.c	2007-12-12 13:21:05.000000000 +0100
@@ -905,8 +905,7 @@
 	}
 
 	pci_set_master(pDev);
-	if (pci_set_dma_mask(pDev, DMA_64BIT_MASK) &&
-	    pci_set_dma_mask(pDev, DMA_32BIT_MASK))
+	if (pci_set_dma_mask(pDev, DMA_32BIT_MASK))
 		return -EINVAL;
 
 	base_addr0_phys = pci_resource_start(pDev,0);