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-rw-r--r--arch/ia64/sn/pci/pcibr/pcibr_dma.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_dma.c b/arch/ia64/sn/pci/pcibr/pcibr_dma.c
index 1ee977fb6eb..95af40cb22f 100644
--- a/arch/ia64/sn/pci/pcibr/pcibr_dma.c
+++ b/arch/ia64/sn/pci/pcibr/pcibr_dma.c
@@ -96,10 +96,14 @@ pcibr_dmamap_ate32(struct pcidev_info *info,
}
/*
- * If we're mapping for MSI, set the MSI bit in the ATE
+ * If we're mapping for MSI, set the MSI bit in the ATE. If it's a
+ * TIOCP based pci bus, we also need to set the PIO bit in the ATE.
*/
- if (dma_flags & SN_DMA_MSI)
+ if (dma_flags & SN_DMA_MSI) {
ate |= PCI32_ATE_MSI;
+ if (IS_TIOCP_SOFT(pcibus_info))
+ ate |= PCI32_ATE_PIO;
+ }
ate_write(pcibus_info, ate_index, ate_count, ate);