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/mm/dma-noncoherent.c | |
| parent | 18b53a2d479f3906b15edcabeb4135c8f22a11ec (diff) | |
| download | linux-6666cc17d7802b7dcbb073e7be1eee2cf6fa64d9.tar.bz2 | |
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/mm/dma-noncoherent.c')
| -rw-r--r-- | arch/powerpc/mm/dma-noncoherent.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/powerpc/mm/dma-noncoherent.c b/arch/powerpc/mm/dma-noncoherent.c index e955539686a4..ee95da19c82d 100644 --- a/arch/powerpc/mm/dma-noncoherent.c +++ b/arch/powerpc/mm/dma-noncoherent.c @@ -30,6 +30,7 @@ #include <linux/types.h> #include <linux/highmem.h> #include <linux/dma-direct.h> +#include <linux/dma-noncoherent.h> #include <linux/export.h> #include <asm/tlbflush.h> @@ -400,14 +401,16 @@ EXPORT_SYMBOL(__dma_sync_page); /* * Return the PFN for a given cpu virtual address returned by - * __dma_nommu_alloc_coherent. This is used by dma_mmap_coherent() + * __dma_nommu_alloc_coherent. */ -unsigned long __dma_get_coherent_pfn(unsigned long cpu_addr) +long arch_dma_coherent_to_pfn(struct device *dev, void *vaddr, + dma_addr_t dma_addr) { /* This should always be populated, so we don't test every * level. If that fails, we'll have a nice crash which * will be as good as a BUG_ON() */ + unsigned long cpu_addr = (unsigned long)vaddr; pgd_t *pgd = pgd_offset_k(cpu_addr); pud_t *pud = pud_offset(pgd, cpu_addr); pmd_t *pmd = pmd_offset(pud, cpu_addr); |