diff options
| author | Kai Makisara <Kai.Makisara@kolumbus.fi> | 2007-10-05 15:54:58 -0400 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.localdomain> | 2007-10-23 15:07:45 -0400 |
| commit | 34996acc5571e64be7f3dba3adced1f7221a8d07 (patch) | |
| tree | 10e8394e0d356c40e5c5b2694a14985a13878c4d | |
| parent | 20d2d3afa87781fe2674ce17bfb16af08a436e81 (diff) | |
[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>
| -rw-r--r-- | 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 db03c4c8ec1..44169390c46 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; |