Subject: [PATCH URGENT] arm: dma-mapping: Set DMA IOMMU ops in arm_iommu_attach_device()

From: [email-masked] (Heiko Stübner)
Date: Wed, 28 Jan 2015 01:25:35 +0100

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 <[email-masked]>

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 <[email-masked]>
	Tested-by: Heiko Stuebner <[email-masked]>

Can you find the original patch somehow or should it be resend to include 
arm at kernel.org ?

Thanks
Heiko