[SCSI] dpt_i2o: driver is only 32 bit so don't set 64 bit DMA mask

This fixes a potential corruption bug where the truncation would cause
reading or writing to the wrong memory area on machines with >4GB of
main memory.

Cc: Stable Kernel Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
index 70f48a1a6d58..b31d1c95c9fb 100644
--- a/drivers/scsi/dpt_i2o.c
+++ b/drivers/scsi/dpt_i2o.c
@@ -906,8 +906,7 @@ static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev
         }
 
         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);