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authorLinus Torvalds <torvalds@linux-foundation.org>2019-11-28 22:16:43 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-11-28 22:16:43 +0300
commit81b6b96475ac7a4ebfceae9f16fb3758327adbfe (patch)
tree8288f9aacb9ee6dbcba8ee146c168a87bdc445a7 /arch/arm/include
parenta308a7102215a582fc474375648965bc5692894b (diff)
parenta7ba70f1787f977f970cd116076c6fce4b9e01cc (diff)
downloadlinux-81b6b96475ac7a4ebfceae9f16fb3758327adbfe.tar.xz
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux; tag 'dma-mapping-5.5' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig: - improve dma-debug scalability (Eric Dumazet) - tiny dma-debug cleanup (Dan Carpenter) - check for vmap memory in dma_map_single (Kees Cook) - check for dma_addr_t overflows in dma-direct when using DMA offsets (Nicolas Saenz Julienne) - switch the x86 sta2x11 SOC to use more generic DMA code (Nicolas Saenz Julienne) - fix arm-nommu dma-ranges handling (Vladimir Murzin) - use __initdata in CMA (Shyam Saini) - replace the bus dma mask with a limit (Nicolas Saenz Julienne) - merge the remapping helpers into the main dma-direct flow (me) - switch xtensa to the generic dma remap handling (me) - various cleanups around dma_capable (me) - remove unused dev arguments to various dma-noncoherent helpers (me) * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux: * tag 'dma-mapping-5.5' of git://git.infradead.org/users/hch/dma-mapping: (22 commits) dma-mapping: treat dev->bus_dma_mask as a DMA limit dma-direct: exclude dma_direct_map_resource from the min_low_pfn check dma-direct: don't check swiotlb=force in dma_direct_map_resource dma-debug: clean up put_hash_bucket() powerpc: remove support for NULL dev in __phys_to_dma / __dma_to_phys dma-direct: avoid a forward declaration for phys_to_dma dma-direct: unify the dma_capable definitions dma-mapping: drop the dev argument to arch_sync_dma_for_* x86/PCI: sta2x11: use default DMA address translation dma-direct: check for overflows on 32 bit DMA addresses dma-debug: increase HASH_SIZE dma-debug: reorder struct dma_debug_entry fields xtensa: use the generic uncached segment support dma-mapping: merge the generic remapping helpers into dma-direct dma-direct: provide mmap and get_sgtable method overrides dma-direct: remove the dma_handle argument to __dma_direct_alloc_pages dma-direct: remove __dma_direct_free_pages usb: core: Remove redundant vmap checks kernel: dma-contiguous: mark CMA parameters __initdata/__initconst dma-debug: add a schedule point in debug_dma_dump_mappings() ...
Diffstat (limited to 'arch/arm/include')
-rw-r--r--arch/arm/include/asm/dma-direct.h19
1 files changed, 0 insertions, 19 deletions
diff --git a/arch/arm/include/asm/dma-direct.h b/arch/arm/include/asm/dma-direct.h
index b67e5fc1fe43..7c3001a6a775 100644
--- a/arch/arm/include/asm/dma-direct.h
+++ b/arch/arm/include/asm/dma-direct.h
@@ -14,23 +14,4 @@ static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dev_addr)
return __pfn_to_phys(dma_to_pfn(dev, dev_addr)) + offset;
}
-static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
-{
- u64 limit, mask;
-
- if (!dev->dma_mask)
- return 0;
-
- mask = *dev->dma_mask;
-
- limit = (mask + 1) & ~mask;
- if (limit && size > limit)
- return 0;
-
- if ((addr | (addr + size - 1)) & ~mask)
- return 0;
-
- return 1;
-}
-
#endif /* ASM_ARM_DMA_DIRECT_H */