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Subject[40/98] [SCSI] lpfc: fix hang on SGI ia64 platform
2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Michael Reed <mdr@sgi.com>

commit 8e68597d087977d3e4fd3e735d290ab45fd0b5ea upstream.

In testing 2.6.31 on one of our ia64 platforms I've encountered a hang
due to the driver using hardware ATEs which are a limited resource.
This is because the driver does not set the dma consistent mask to
64 bits.

Signed-off-by: Michael Reed <mdr@sgi.com>
Acked-by: James Smart <James.Smart@Emulex.Com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/scsi/lpfc/lpfc_init.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)

--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -4384,9 +4384,13 @@ lpfc_sli_pci_mem_setup(struct lpfc_hba *
pdev = phba->pcidev;

/* Set the device DMA mask size */
- if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0)
- if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
+ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0
+ || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(64)) != 0) {
+ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0
+ || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(32)) != 0) {
return error;
+ }
+ }

/* Get the bus address of Bar0 and Bar2 and the number of bytes
* required by each mapping.
@@ -5940,9 +5944,13 @@ lpfc_sli4_pci_mem_setup(struct lpfc_hba
pdev = phba->pcidev;

/* Set the device DMA mask size */
- if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0)
- if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
+ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0
+ || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(64)) != 0) {
+ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0
+ || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(32)) != 0) {
return error;
+ }
+ }

/* Get the bus address of SLI4 device Bar0, Bar1, and Bar2 and the
* number of bytes required by each mapping. They are actually



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