Prevent DMA transfers from crossing the 16MB limit for early 53c896 chips.
From: Kai Makisara <[EMAIL PROTECTED]>
Signed-off-by: Matthew Wilcox <[EMAIL PROTECTED]>
---
drivers/scsi/sym53c8xx_2/sym_glue.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/sym53c8xx_2/sym_glue.c
b/drivers/scsi/sym53c8xx_2/sym_glue.c
index 3db2232..d5455e3 100644
--- a/drivers/scsi/sym53c8xx_2/sym_glue.c
+++ b/drivers/scsi/sym53c8xx_2/sym_glue.c
@@ -1531,6 +1531,10 @@ static struct Scsi_Host * __devinit sym_attach(struct
scsi_host_template *tpnt,
BUG_ON(sym2_transport_template == NULL);
instance->transportt = sym2_transport_template;
+ /* 53c896 rev 1 errata: DMA may not cross 16MB boundary */
+ if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && np->revision_id < 2)
+ instance->dma_boundary = 0xFFFFFF;
+
spin_unlock_irqrestore(instance->host_lock, flags);
return instance;
--
1.4.4.2
-
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