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authorChristoph Hellwig <hch@lst.de>2018-12-21 14:32:02 +0100
committerChristoph Hellwig <hch@lst.de>2019-04-08 17:52:46 +0200
commite43e2657fe77a37b13643e2469670ecdb0ba5e10 (patch)
tree4ee78346c28a4eb714497802b083af8064b9992e /kernel/dma/mapping.c
parentdma-mapping: remove leftover NULL device support (diff)
downloadlinux-e43e2657fe77a37b13643e2469670ecdb0ba5e10.tar.xz
linux-e43e2657fe77a37b13643e2469670ecdb0ba5e10.zip
x86/dma: Remove the x86_dma_fallback_dev hack
Now that we removed support for the NULL device argument in the DMA API, there is no need to cater for that in the x86 code. Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'kernel/dma/mapping.c')
-rw-r--r--kernel/dma/mapping.c7
1 files changed, 0 insertions, 7 deletions
diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c
index c000906348c9..685a53f2a793 100644
--- a/kernel/dma/mapping.c
+++ b/kernel/dma/mapping.c
@@ -238,10 +238,6 @@ u64 dma_get_required_mask(struct device *dev)
}
EXPORT_SYMBOL_GPL(dma_get_required_mask);
-#ifndef arch_dma_alloc_attrs
-#define arch_dma_alloc_attrs(dev) (true)
-#endif
-
void *dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,
gfp_t flag, unsigned long attrs)
{
@@ -256,9 +252,6 @@ void *dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,
/* let the implementation decide on the zone to allocate from: */
flag &= ~(__GFP_DMA | __GFP_DMA32 | __GFP_HIGHMEM);
- if (!arch_dma_alloc_attrs(&dev))
- return NULL;
-
if (dma_is_direct(ops))
cpu_addr = dma_direct_alloc(dev, size, dma_handle, flag, attrs);
else if (ops->alloc)