[PATCH 1/1] Fix PCI DMA flag propagation on SN (Altix) with PICs

From: Jeremy Higdon
Date: Fri Feb 27 2009 - 04:38:48 EST


We recently discovered a problem with passing of DMA attributes on
SN systems with the older PIC chips.

Signed-off-by: Jeremy Higdon <jeremy@xxxxxxx>

--- a/arch/ia64/sn/pci/pcibr/pcibr_dma.c 2009-02-25 23:29:21.000000000 -0800
+++ b/arch/ia64/sn/pci/pcibr/pcibr_dma.c 2009-02-25 23:29:09.318611870 -0800
@@ -135,11 +135,10 @@ pcibr_dmatrans_direct64(struct pcidev_in
if (SN_DMA_ADDRTYPE(dma_flags) == SN_DMA_ADDR_PHYS)
pci_addr = IS_PIC_SOFT(pcibus_info) ?
PHYS_TO_DMA(paddr) :
- PHYS_TO_TIODMA(paddr) | dma_attributes;
+ PHYS_TO_TIODMA(paddr);
else
- pci_addr = IS_PIC_SOFT(pcibus_info) ?
- paddr :
- paddr | dma_attributes;
+ pci_addr = paddr;
+ pci_addr |= dma_attributes;

/* Handle Bus mode */
if (IS_PCIX(pcibus_info))
--
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