52 lines
1.4 KiB
Diff
52 lines
1.4 KiB
Diff
From 48c48c4437603bad79eb848ac03b21a86cc3bb90 Mon Sep 17 00:00:00 2001
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From: popcornmix <popcornmix@gmail.com>
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Date: Thu, 7 Aug 2014 02:03:50 +0100
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Subject: [PATCH 057/114] Revert "ARM: dma: Use dma_pfn_offset for dma address
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translation"
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This reverts commit 6ce0d20016925d031f1e24d64302e4c976d7cec6.
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---
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arch/arm/include/asm/dma-mapping.h | 18 +-----------------
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1 file changed, 1 insertion(+), 17 deletions(-)
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--- a/arch/arm/include/asm/dma-mapping.h
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+++ b/arch/arm/include/asm/dma-mapping.h
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@@ -58,37 +58,21 @@ static inline int dma_set_mask(struct de
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#ifndef __arch_pfn_to_dma
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static inline dma_addr_t pfn_to_dma(struct device *dev, unsigned long pfn)
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{
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- if (dev)
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- pfn -= dev->dma_pfn_offset;
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return (dma_addr_t)__pfn_to_bus(pfn);
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}
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static inline unsigned long dma_to_pfn(struct device *dev, dma_addr_t addr)
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{
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- unsigned long pfn = __bus_to_pfn(addr);
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-
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- if (dev)
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- pfn += dev->dma_pfn_offset;
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-
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- return pfn;
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+ return __bus_to_pfn(addr);
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}
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static inline void *dma_to_virt(struct device *dev, dma_addr_t addr)
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{
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- if (dev) {
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- unsigned long pfn = dma_to_pfn(dev, addr);
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-
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- return phys_to_virt(__pfn_to_phys(pfn));
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- }
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-
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return (void *)__bus_to_virt((unsigned long)addr);
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}
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static inline dma_addr_t virt_to_dma(struct device *dev, void *addr)
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{
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- if (dev)
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- return pfn_to_dma(dev, virt_to_pfn(addr));
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-
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return (dma_addr_t)__virt_to_bus((unsigned long)(addr));
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}
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