diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-02-13 08:01:24 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-02-18 22:41:03 +1100 |
| commit | 6666cc17d7802b7dcbb073e7be1eee2cf6fa64d9 (patch) | |
| tree | b6161b925f0fa1957a5a9e1174fd963c3b745ca3 /arch/powerpc/kernel/dma.c | |
| parent | 18b53a2d479f3906b15edcabeb4135c8f22a11ec (diff) | |
powerpc/dma: remove dma_nommu_mmap_coherent
The coherent cache version of this function already is functionally
identicall to the default version, and by defining the
arch_dma_coherent_to_pfn hook the same is ture for the noncoherent
version as well.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/dma.c')
| -rw-r--r-- | arch/powerpc/kernel/dma.c | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c index 10fa4e18b4e9..841c43355a7e 100644 --- a/arch/powerpc/kernel/dma.c +++ b/arch/powerpc/kernel/dma.c @@ -114,24 +114,6 @@ void __dma_nommu_free_coherent(struct device *dev, size_t size, } #endif /* !CONFIG_NOT_COHERENT_CACHE */ -int dma_nommu_mmap_coherent(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t handle, size_t size, - unsigned long attrs) -{ - unsigned long pfn; - -#ifdef CONFIG_NOT_COHERENT_CACHE - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - pfn = __dma_get_coherent_pfn((unsigned long)cpu_addr); -#else - pfn = page_to_pfn(virt_to_page(cpu_addr)); -#endif - return remap_pfn_range(vma, vma->vm_start, - pfn + vma->vm_pgoff, - vma->vm_end - vma->vm_start, - vma->vm_page_prot); -} - int dma_nommu_map_sg(struct device *dev, struct scatterlist *sgl, int nents, enum dma_data_direction direction, unsigned long attrs) @@ -218,7 +200,6 @@ static inline void dma_nommu_sync_single(struct device *dev, const struct dma_map_ops dma_nommu_ops = { .alloc = __dma_nommu_alloc_coherent, .free = __dma_nommu_free_coherent, - .mmap = dma_nommu_mmap_coherent, .map_sg = dma_nommu_map_sg, .unmap_sg = dma_nommu_unmap_sg, .dma_supported = dma_nommu_dma_supported, |