From: Russell King <rmk@arm.linux.org.uk>
To: Qin Dehua <qindehua@gmail.com>
Cc: Dan Williams <dan.j.williams@intel.com>,
linux-kernel@vger.kernel.org, santosh.shilimkar@ti.com,
neilb@suse.de
Subject: Re: PROBLEM: ARM-dma-mapping-fix-for-speculative-prefetching cause OOPS
Date: Fri, 8 Jul 2011 09:07:51 +0100 [thread overview]
Message-ID: <20110708080751.GA14947@flint.arm.linux.org.uk> (raw)
In-Reply-To: <CA+gQ4tczHA2NGyLaVFjDs6CQjeQZbzNCCBU0zX4HVgaF4VFEFQ@mail.gmail.com>
On Fri, Jul 08, 2011 at 12:38:38PM +0800, Qin Dehua wrote:
> After doing the above changes, the kernel just report BUG_ON(dir ==
> DMA_BIDIRECTIONAL):
That's really unfortunate.
The only other thing I can think which may help is to enable all the
raid5, async_tx and dmaengine debug code. And I hope you have
DMA_API_DEBUG enabled in your .config ?
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of:
next prev parent reply other threads:[~2011-07-08 8:08 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-30 4:09 PROBLEM: ARM-dma-mapping-fix-for-speculative-prefetching cause OOPS Qin Dehua
2011-06-30 7:43 ` Russell King
2011-06-30 11:16 ` Qin Dehua
2011-06-30 11:28 ` Russell King
2011-06-30 18:02 ` Dan Williams
2011-07-01 4:54 ` Qin Dehua
2011-07-07 9:39 ` Russell King
2011-07-08 4:38 ` Qin Dehua
2011-07-08 8:07 ` Russell King [this message]
2011-07-08 17:32 ` Russell King
2011-07-08 20:13 ` Dan Williams
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