linux-kernel - [PATCH 2.6.19-rc2] scsi: megaraid_{mm,mbox}: 64-bit DMA capability fix

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Date:	Mon, 16 Oct 2006 12:08:43 +0400
From:	Vasily Averin <vvs@...ru>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-scsi@...r.kernel.org, "Ju, Seokmann" <Seokmann.Ju@...l.com>,
	James Bottomley <James.Bottomley@...elEye.com>,
	Andrew Morton <akpm@...l.org>,
	Linus Torvalds <torvalds@...l.org>, devel@...nvz.org
CC:	Andrey Mirkin <amirkin@...ru>
Subject: [PATCH 2.6.19-rc2] scsi: megaraid_{mm,mbox}: 64-bit DMA capability
 fix

From: Andrey Mirkin (amirkin@...ru)

It is known that 2 LSI Logic MegaRAID SATA RAID Controllers (150-4 and 150-6)
don't support 64-bit DMA. Unfortunately currently this check is wrong and driver
 sets 64-bit DMA mode for these devices.

Signed-off-by:	Andrey Mirkin <amirkin@...ru>
Ack-by:		Vasily Averin <vvs@...ru>

--- linux-2.6.19-rc2/drivers/scsi/megaraid/megaraid_mbox.c.mgst6	2006-10-16
10:26:50.000000000 +0400
+++ linux-2.6.19-rc2/drivers/scsi/megaraid/megaraid_mbox.c	2006-10-16
11:30:55.000000000 +0400
@@ -884,7 +884,7 @@ 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 &&


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