From mboxrd@z Thu Jan 1 00:00:00 1970 From: olof@lixom.net (Olof Johansson) Date: Thu, 29 Jan 2015 10:57:25 -0800 Subject: [PATCH URGENT] arm: dma-mapping: Set DMA IOMMU ops in arm_iommu_attach_device() In-Reply-To: <2085044.xTrZHjchoH@diego> References: <1422022909-31044-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> <2085044.xTrZHjchoH@diego> Message-ID: <20150129185725.GA18628@quad.lixom.net> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, Jan 28, 2015 at 01:25:35AM +0100, Heiko St?bner wrote: > Hi Arnd, Olof, > > Am Freitag, 23. Januar 2015, 16:21:49 schrieb Laurent Pinchart: > > Commit 4bb25789ed28228a ("arm: dma-mapping: plumb our iommu mapping ops > > into arch_setup_dma_ops") moved the setting of the DMA operations from > > arm_iommu_attach_device() to arch_setup_dma_ops() where the DMA > > operations to be used are selected based on whether the device is > > connected to an IOMMU. However, the IOMMU detection scheme requires the > > IOMMU driver to be ported to the new IOMMU of_xlate API. As no driver > > has been ported yet, this effectively breaks all IOMMU ARM users that > > depend on the IOMMU being handled transparently by the DMA mapping API. > > > > Fix this by restoring the setting of DMA IOMMU ops in > > arm_iommu_attach_device() and splitting the rest of the function into a > > new internal __arm_iommu_attach_device() function, called by > > arch_setup_dma_ops(). > > > > Signed-off-by: Laurent Pinchart > > in the original submission arm at kernel.org was not included, but it looks like > the patch should go through arm-soc. > > We have two tags > Acked-by: Will Deacon > Tested-by: Heiko Stuebner > > Can you find the original patch somehow or should it be resend to include > arm at kernel.org ? The patch was posted on a list that I am subscribed to, so it popped up in the same thread this time. I've applied it to fixes for 3.19. Thanks, -Olof