commit 34996acc5571e64be7f3dba3adced1f7221a8d07
author Kai Makisara <Kai.Makisara@kolumbus.fi> Fri Oct 05 15:54:58 2007 -0400
committer James Bottomley <jejb@mulgrave.localdomain> Tue Oct 23 15:07:45 2007 -0400
tree 10e8394e0d356c40e5c5b2694a14985a13878c4d
parent 20d2d3afa87781fe2674ce17bfb16af08a436e81

[SCSI] sym53c8xx: Work around 53c896 erratum

Prevent DMA transfers from crossing the 16MB limit for early 53c896 chips.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/sym53c8xx_2/sym_glue.c

diff --git a/drivers/scsi/sym53c8xx_2/sym_glue.c b/drivers/scsi/sym53c8xx_2/sym_glue.c
index db03c4c8..4416939 100644
--- a/drivers/scsi/sym53c8xx_2/sym_glue.c
+++ b/drivers/scsi/sym53c8xx_2/sym_glue.c
@@ -1531,6 +1531,10 @@
 	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;