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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-04-18 17:07:43 (GMT)
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-04-18 17:07:43 (GMT)
commitd5381e42f64ca19f05c5799ffae5708acb6ed411 (patch)
tree8b5e757a9847047102c475c6c583afc191d02e5b /arch/powerpc/kernel/dma.c
parentf030d60b30855e18ac5bf080fa9e576147623d18 (diff)
parentb3c27b51db9112d03864fdef44fa611dd69c1425 (diff)
downloadlinux-fsl-qoriq-d5381e42f64ca19f05c5799ffae5708acb6ed411.tar.xz
ASoC: Merge branch 'for-2.6.39' into for-2.6.40
Fix trivial conflict caused by silly spelling fix patch. Conflicts: sound/soc/codecs/wm8994.c
Diffstat (limited to 'arch/powerpc/kernel/dma.c')
-rw-r--r--arch/powerpc/kernel/dma.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c
index cf02cad..d238c08 100644
--- a/arch/powerpc/kernel/dma.c
+++ b/arch/powerpc/kernel/dma.c
@@ -179,3 +179,21 @@ static int __init dma_init(void)
return 0;
}
fs_initcall(dma_init);
+
+int dma_mmap_coherent(struct device *dev, struct vm_area_struct *vma,
+ void *cpu_addr, dma_addr_t handle, size_t size)
+{
+ 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);
+}
+EXPORT_SYMBOL_GPL(dma_mmap_coherent);