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MIPS: Remove unnecessary platform dma helper functions

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The semantics stay the same - on Cavium Octeon the functions were dead
code (it overrides the MIPS DMA ops) - on other platforms they contained
no code at all.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5720/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Felix Fietkau 2013-08-15 11:28:30 +02:00 committed by Ralf Baechle
parent 8a8594a738
commit 4e7f72660c
8 changed files with 1 additions and 76 deletions
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12
arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h
View File

@ -52,23 +52,11 @@ static inline int plat_dma_supported(struct device *dev, u64 mask)
return 0;
}
static inline void plat_extra_sync_for_device(struct device *dev)
{
BUG();
}
static inline int plat_device_is_coherent(struct device *dev)
{
return 1;
}
static inline int plat_dma_mapping_error(struct device *dev,
dma_addr_t dma_addr)
{
BUG();
return 0;
}
dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr);
phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr);

10
arch/mips/include/asm/mach-generic/dma-coherence.h
View File

@ -47,16 +47,6 @@ static inline int plat_dma_supported(struct device *dev, u64 mask)
return 1;
}
static inline void plat_extra_sync_for_device(struct device *dev)
{
}
static inline int plat_dma_mapping_error(struct device *dev,
dma_addr_t dma_addr)
{
return 0;
}
static inline int plat_device_is_coherent(struct device *dev)
{
#ifdef CONFIG_DMA_COHERENT

10
arch/mips/include/asm/mach-ip27/dma-coherence.h
View File

@ -58,16 +58,6 @@ static inline int plat_dma_supported(struct device *dev, u64 mask)
return 1;
}
static inline void plat_extra_sync_for_device(struct device *dev)
{
}
static inline int plat_dma_mapping_error(struct device *dev,
dma_addr_t dma_addr)
{
return 0;
}
static inline int plat_device_is_coherent(struct device *dev)
{
return 1; /* IP27 non-cohernet mode is unsupported */

11
arch/mips/include/asm/mach-ip32/dma-coherence.h
View File

@ -80,17 +80,6 @@ static inline int plat_dma_supported(struct device *dev, u64 mask)
return 1;
}
static inline void plat_extra_sync_for_device(struct device *dev)
{
return;
}
static inline int plat_dma_mapping_error(struct device *dev,
dma_addr_t dma_addr)
{
return 0;
}
static inline int plat_device_is_coherent(struct device *dev)
{
return 0; /* IP32 is non-cohernet */

10
arch/mips/include/asm/mach-jazz/dma-coherence.h
View File

@ -48,16 +48,6 @@ static inline int plat_dma_supported(struct device *dev, u64 mask)
return 1;
}
static inline void plat_extra_sync_for_device(struct device *dev)
{
}
static inline int plat_dma_mapping_error(struct device *dev,
dma_addr_t dma_addr)
{
return 0;
}
static inline int plat_device_is_coherent(struct device *dev)
{
return 0;

10
arch/mips/include/asm/mach-loongson/dma-coherence.h
View File

@ -53,16 +53,6 @@ static inline int plat_dma_supported(struct device *dev, u64 mask)
return 1;
}
static inline void plat_extra_sync_for_device(struct device *dev)
{
}
static inline int plat_dma_mapping_error(struct device *dev,
dma_addr_t dma_addr)
{
return 0;
}
static inline int plat_device_is_coherent(struct device *dev)
{
return 0;

10
arch/mips/include/asm/mach-powertv/dma-coherence.h
View File

@ -99,16 +99,6 @@ static inline int plat_dma_supported(struct device *dev, u64 mask)
return 1;
}
static inline void plat_extra_sync_for_device(struct device *dev)
{
}
static inline int plat_dma_mapping_error(struct device *dev,
dma_addr_t dma_addr)
{
return 0;
}
static inline int plat_device_is_coherent(struct device *dev)
{
return 0;

4
arch/mips/mm/dma-default.c
View File

@ -297,7 +297,6 @@ static void mips_dma_sync_single_for_cpu(struct device *dev,
static void mips_dma_sync_single_for_device(struct device *dev,
dma_addr_t dma_handle, size_t size, enum dma_data_direction direction)
{
plat_extra_sync_for_device(dev);
if (!plat_device_is_coherent(dev))
__dma_sync(dma_addr_to_page(dev, dma_handle),
dma_handle & ~PAGE_MASK, size, direction);
@ -327,7 +326,7 @@ static void mips_dma_sync_sg_for_device(struct device *dev,
int mips_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return plat_dma_mapping_error(dev, dma_addr);
return 0;
}
int mips_dma_supported(struct device *dev, u64 mask)
@ -340,7 +339,6 @@ void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
{
BUG_ON(direction == DMA_NONE);
plat_extra_sync_for_device(dev);
if (!plat_device_is_coherent(dev))
__dma_sync_virtual(vaddr, size, direction);
}