From mboxrd@z Thu Jan 1 00:00:00 1970 From: Will Deacon Subject: Re: [PATCH 3/9] ARM: dma-mapping: convert DMA direction into IOMMU protection attributes Date: Wed, 19 Jun 2013 09:52:02 +0100 Message-ID: <20130619085202.GC20351@mudshark.cambridge.arm.com> References: <1370889285-22799-1-git-send-email-will.deacon@arm.com> <1370889285-22799-4-git-send-email-will.deacon@arm.com> <51C16DAF.1090205@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <51C16DAF.1090205-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Marek Szyprowski Cc: "iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org" , "devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org" , "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" List-Id: devicetree@vger.kernel.org On Wed, Jun 19, 2013 at 09:37:03AM +0100, Marek Szyprowski wrote: > Hello, Hi Marek, > On 6/10/2013 8:34 PM, Will Deacon wrote: > > IOMMU mappings take a prot parameter, identifying the protection bits > > to enforce on the newly created mapping (READ or WRITE). The ARM > > dma-mapping framework currently just passes 0 as the prot argument, > > resulting in faulting mappings. > > > > This patch infers the protection attributes based on the direction of > > the DMA transfer. > > > > Cc: Marek Szyprowski > > Signed-off-by: Will Deacon > > Thanks for fixing this issue. Could I take this patch to my dma-mapping tree > with other dma-mapping changes I've collected recently or do you want my ack > and push it via other tree? Please, feel free to take it via the dma-mapping tree! That's probably the best route for it and there's nothing that really depends on it anyway. Cheers, Will