From: David Brownell <david-b@pacbell.net>
To: Koen Kooi <k.kooi@student.utwente.nl>
Cc: "linux-omap@vger.kernel.org List" <linux-omap@vger.kernel.org>,
Ajay Kumar Gupta <ajay.gupta@ti.com>
Subject: Re: DVB-T problems with MUSB
Date: Tue, 7 Oct 2008 12:32:27 -0700 [thread overview]
Message-ID: <200810071232.27362.david-b@pacbell.net> (raw)
In-Reply-To: <70E3439A-A4CE-442B-928A-EEBAB253F279@student.utwente.nl>
On Tuesday 07 October 2008, Koen Kooi wrote:
> Is this a problem with MUSB, omap dma or the dvb stack?
ISTR a similar problem discussed on Linux-USB in the last
few months ...
Don't recall the outcome for sure, but I think the problem
was the DVB stack passing a DMA-unsafe buffer to USB. If the
buffer came from vmalloc rather than kmalloc or get_pages,
passing it to USB is not allowed.
- Dave
next prev parent reply other threads:[~2008-10-07 19:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-07 19:03 DVB-T problems with MUSB Koen Kooi
2008-10-07 19:32 ` David Brownell [this message]
2008-10-07 23:10 ` Kimmo Jukarainen
2008-10-08 1:17 ` David Brownell
2008-10-08 8:32 ` Koen Kooi
2009-10-21 15:43 ` [PATCH] omapfb: Wrong test on unsigned? Koen Kooi
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