linux-kernel - [PATCH] dpt_i2o: don't set DMA_64BIT_MASK [was: Re: [stable] broken dpt_i2o in 2.6.23 (was: ext2 check page: bad entry in directory) (fwd)]

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Message-ID: <20071213101144.GA61767@xs4all.net>
Date:	Thu, 13 Dec 2007 11:11:44 +0100
From:	Miquel van Smoorenburg <miquels@...tron.nl>
To:	Greg KH <greg@...ah.com>
Cc:	James Bottomley <James.Bottomley@...senPartnership.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Miquel van Smoorenburg <miquels@...tron.nl>,
	linux-scsi@...r.kernel.org, matthew@....cx,
	linux-kernel@...r.kernel.org,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	Anders Henke <anders.henke@...d1.de>, stable@...nel.org
Subject: [PATCH] dpt_i2o: don't set DMA_64BIT_MASK [was: Re: [stable] broken dpt_i2o in 2.6.23 (was: ext2 check page: bad entry in directory) (fwd)]

According to Greg KH:
> So, what should be added to 2.6.23-stable then?  And, can I get a real
> changelog entry for it?

This is suitable for both 2.6.23.x and 2.6.24-rc5 :

linux-2.6-dpt_i2o-no-dma64.patch

The dpt_i2o driver can't handle 64 bit DMA addresses, so do not
let it set pci_set_dma_mask(pDev, DMA_64BIT_MASK) .

Signed-off-by: Miquel van Smoorenburg <miquels@...tron.nl>

diff -ruN linux-2.6.23.9.orig/drivers/scsi/dpt_i2o.c linux-2.6.23.9/drivers/scsi/dpt_i2o.c
--- linux-2.6.23.9.orig/drivers/scsi/dpt_i2o.c	2007-11-26 18:51:43.000000000 +0100
+++ linux-2.6.23.9/drivers/scsi/dpt_i2o.c	2007-12-12 13:21:05.000000000 +0100
@@ -905,8 +905,7 @@
 	}
 
 	pci_set_master(pDev);
-	if (pci_set_dma_mask(pDev, DMA_64BIT_MASK) &&
-	    pci_set_dma_mask(pDev, DMA_32BIT_MASK))
+	if (pci_set_dma_mask(pDev, DMA_32BIT_MASK))
 		return -EINVAL;
 
 	base_addr0_phys = pci_resource_start(pDev,0);

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