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authorChristoph Hellwig <hch@lst.de>2018-09-11 08:55:28 +0200
committerChristoph Hellwig <hch@lst.de>2018-09-20 09:01:16 +0200
commit58b0440663ec11372befb8ead0ee7099d8878590 (patch)
treec613ed22ad229e6612d8c71888d2bb8139163ea8 /arch/microblaze/include/asm
parentbc3ec75de5452db59b683487867ba562b950708a (diff)
downloadlinux-58b0440663ec11372befb8ead0ee7099d8878590.tar.bz2
dma-mapping: consolidate the dma mmap implementations
The only functional differences (modulo a few missing fixes in the arch code) is that architectures without coherent caches need a hook to convert a virtual or dma address into a pfn, given that we don't have the kernel linear mapping available for the otherwise easy virt_to_page call. As a side effect we can support mmap of the per-device coherent area even on architectures not providing the callback, and we make previous dangerous default methods dma_common_mmap actually save for non-coherent architectures by rejecting it without the right helper. In addition to that we need a hook so that some architectures can override the protection bits when mmaping a dma coherent allocations. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Paul Burton <paul.burton@mips.com> # MIPS parts
Diffstat (limited to 'arch/microblaze/include/asm')
-rw-r--r--arch/microblaze/include/asm/pgtable.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/microblaze/include/asm/pgtable.h b/arch/microblaze/include/asm/pgtable.h
index 7b650ab14fa0..f64ebb9c9a41 100644
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -553,8 +553,6 @@ void __init *early_get_page(void);
extern unsigned long ioremap_bot, ioremap_base;
-unsigned long consistent_virt_to_pfn(void *vaddr);
-
void setup_memory(void);
#endif /* __ASSEMBLY__ */