[RFC 4/4] ARM: dma-mapping: dma_{alloc,free}_coherent with empty attrs
From: Hiroshi Doyu <hidden>
Date: 2012-08-22 10:21:02
Also in:
linux-arm-kernel, lkml
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
There's possibility that this attrs be used later to set. Signed-off-by: Hiroshi Doyu <redacted> --- arch/arm/include/asm/dma-mapping.h | 21 +++++++++++++++++---- 1 files changed, 17 insertions(+), 4 deletions(-)
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index c27d855..96b67c7 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h@@ -125,8 +125,6 @@ extern int dma_supported(struct device *dev, u64 mask); extern void *arm_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp, struct dma_attrs *attrs); -#define dma_alloc_coherent(d, s, h, f) dma_alloc_attrs(d, s, h, f, NULL) - static inline void *dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flag, struct dma_attrs *attrs)
@@ -135,11 +133,21 @@ static inline void *dma_alloc_attrs(struct device *dev, size_t size, void *cpu_addr; BUG_ON(!ops); + if (flag & GFP_ATOMIC) + dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, attrs); + cpu_addr = ops->alloc(dev, size, dma_handle, flag, attrs); debug_dma_alloc_coherent(dev, size, *dma_handle, cpu_addr); return cpu_addr; } +static inline void *dma_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag) +{ + DEFINE_DMA_ATTRS(attrs); + return dma_alloc_attrs(dev, size, dma_handle, flag, &attrs); +} + /** * arm_dma_free - free memory allocated by arm_dma_alloc * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
@@ -157,8 +165,6 @@ static inline void *dma_alloc_attrs(struct device *dev, size_t size, extern void arm_dma_free(struct device *dev, size_t size, void *cpu_addr, dma_addr_t handle, struct dma_attrs *attrs); -#define dma_free_coherent(d, s, c, h) dma_free_attrs(d, s, c, h, NULL) - static inline void dma_free_attrs(struct device *dev, size_t size, void *cpu_addr, dma_addr_t dma_handle, struct dma_attrs *attrs)
@@ -170,6 +176,13 @@ static inline void dma_free_attrs(struct device *dev, size_t size, ops->free(dev, size, cpu_addr, dma_handle, attrs); } +static inline void dma_free_coherent(struct device *dev, size_t size, + void *cpu_addr, dma_addr_t dma_handle) +{ + DEFINE_DMA_ATTRS(attrs); + return dma_free_attrs(dev, size, cpu_addr, dma_handle, &attrs); +} + /** * arm_dma_mmap - map a coherent DMA allocation into user space * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
--
1.7.5.4
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