From mboxrd@z Thu Jan 1 00:00:00 1970 From: GKing@nvidia.com (Gary King) Date: Wed, 11 Aug 2010 08:54:27 -0700 Subject: Problem with non aligned DMA in usbnet on ARM In-Reply-To: References: <4C627479.4060400@parrot.com> Message-ID: <4C62C7B3.2030706@nvidia.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 08/11/2010 04:38 AM, Martin Fuzzey wrote: > > > It seems to me these fixup functions are not intended to solve > alignment issues but rather implement device specific framing (such as > when the hardware packs multiple ethernet frames into a single urb) > I sent a patch to the list about 2 weeks ago that added support to DMA bounce to bounce for misaligned buffers. We have a similar problem with URB alignment for usbnet on Tegra's HCD: http://lists.arm.linux.org.uk/lurker/message/20100729.005746.b43fa1d9.en.html - Gary