From: Chip Coldwell <coldwell@redhat.com>
Subject: [RHEL-5.1 PATCH] bz248327 SATA RAID 150-4/6 do not support 64-bit DMA
Date: Wed, 15 Aug 2007 12:05:20 -0400 (EDT)
Bugzilla: 248327
Message-Id: <Pine.LNX.4.64.0708151203380.24530@bogart.boston.redhat.com>
Changelog: [scsi] SATA RAID 150-4/6 do not support 64-bit DMA



This patch is a straightforward backport of the upstream commit

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff_plain;h=8741ca71a3f626a56595b88200ebf952ce77ceef

to disable 64-bit DMA for some megaraid devices that are known not to
support it.

 drivers/scsi/megaraid/megaraid_mbox.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_mbox.c b/drivers/scsi/megaraid/megaraid_mbox.c
index dcfb0d1..c0fc860 100644
--- a/drivers/scsi/megaraid/megaraid_mbox.c
+++ b/drivers/scsi/megaraid/megaraid_mbox.c
@@ -876,7 +876,7 @@ megaraid_init_mbox(adapter_t *adapter)
 
 	if (((magic64 == HBA_SIGNATURE_64_BIT) &&
 		((adapter->pdev->subsystem_device !=
-		PCI_SUBSYS_ID_MEGARAID_SATA_150_6) ||
+		PCI_SUBSYS_ID_MEGARAID_SATA_150_6) &&
 		(adapter->pdev->subsystem_device !=
 		PCI_SUBSYS_ID_MEGARAID_SATA_150_4))) ||
 		(adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC &&


-- 
Charles M. "Chip" Coldwell
Senior Software Engineer
Red Hat, Inc
978-392-2426