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Date: Sun, 15 Oct 2017 20:27:37 -0700 From: Randy Dunlap <rdunlap@...radead.org> To: Marian Mihailescu <marian.mihailescu@...laide.edu.au>, linux-kernel@...r.kernel.org Cc: Bart Van Assche <bart.vanassche@...disk.com>, iommu@...ts.linux-foundation.org Subject: Re: CONFIG_DMA_NOOP_OPS breaks ARM arch On 10/15/17 19:27, Marian Mihailescu wrote: > After commit 7844572c633964c864d9f32dc3f2a8ffe5d70371, dma_noop_ops > are built only for architectures that use it. > > For ARM architecture, CONFIG_DMA_NOOP_OPS is not selected, and cannot > be selected. > > However, arch/arm/include/asm/dma-mapping.h is referencing dma_noop_ops: > > static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) > { > return IS_ENABLED(CONFIG_MMU) ? &arm_dma_ops : &dma_noop_ops; > } > > I will let a maintainer suggest the best resolution for this :) > add Bart and iommu mailing list. -- ~Randy
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