From: Arjan van de Ven <arjan@infradead.org>
To: Larry Finger <Larry.Finger@lwfinger.net>
Cc: LKML <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: Regression in 2.6.24-rc3 - 64-bit DMA fails for BCM94311MCG rev 02
Date: Sun, 18 Nov 2007 16:17:27 -0800 [thread overview]
Message-ID: <20071118161727.106e7eea@laptopd505.fenrus.org> (raw)
In-Reply-To: <4740D323.3090107@lwfinger.net>
On Sun, 18 Nov 2007 18:04:51 -0600
Larry Finger <Larry.Finger@lwfinger.net> wrote:
> I get a failure of 64-bit DMA on a BCM94311MCG rev 02 wireless
> interface running on x86_64 using an AMD Turion 64 X2 processor on an
> HP Pavilion dv2125nr laptop. The error code indicates that the
> interface is getting a descriptor read error, even though the
> descriptor ring and all the DMA buffers have been checked when
> allocated. This particular card version is newly supported; however,
> it was working correctly on 2.6.24-rc2.
>
worth adding a pci_set_dma_mask(pdev, DMA_32BIT_MASK); in the driver,
just after pci_enable_device(); (also check if there's other
pci_set_dma_mask functions, to make sure it doesn't get set back to 64
bit)
--
If you want to reach me at my work email, use arjan@linux.intel.com
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
next prev parent reply other threads:[~2007-11-19 0:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-19 0:04 Larry Finger
2007-11-19 0:17 ` Arjan van de Ven [this message]
2007-11-19 2:49 ` Larry Finger
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