diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-11-29 14:40:28 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-11-29 21:42:40 +0300 |
| commit | dcea83adc666061864b82c96e059dffe7268b512 (patch) | |
| tree | 4882086842f53bee3f6c655e6a3283effd3fbdff /arch/arm/include | |
| parent | c72e005b099302b3c6bee8381396199b77b6dd4f (diff) | |
| download | linux-dcea83adc666061864b82c96e059dffe7268b512.tar.xz | |
[ARM] Hide ISA DMA API when ISA_DMA_API is unset
When ISA_DMA_API is unset, we're not implementing the ISA DMA API,
so there's no point in publishing the prototypes via asm/dma.h, nor
including the machine dependent parts of that API.
This allows us to remove a lot of mach/dma.h files which don't contain
any useful code. Unfortunately though, some platforms put their own
private non-ISA definitions into mach/dma.h, so we leave these behind
and fix the appropriate #include statments.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/dma.h | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/arch/arm/include/asm/dma.h b/arch/arm/include/asm/dma.h index 6a4d44a5b458..06419980dde7 100644 --- a/arch/arm/include/asm/dma.h +++ b/arch/arm/include/asm/dma.h @@ -1,13 +1,7 @@ #ifndef __ASM_ARM_DMA_H #define __ASM_ARM_DMA_H -typedef unsigned int dmach_t; - -#include <linux/spinlock.h> #include <asm/memory.h> -#include <asm/system.h> -#include <asm/scatterlist.h> -#include <mach/dma.h> /* * This is the maximum virtual address which can be DMA'd from. @@ -16,6 +10,19 @@ typedef unsigned int dmach_t; #define MAX_DMA_ADDRESS 0xffffffff #endif +#ifdef CONFIG_ISA_DMA_API +/* + * This is used to support drivers written for the x86 ISA DMA API. + * It should not be re-used except for that purpose. + */ +#include <linux/spinlock.h> +#include <asm/system.h> +#include <asm/scatterlist.h> + +typedef unsigned int dmach_t; + +#include <mach/dma.h> + /* * DMA modes */ @@ -141,4 +148,6 @@ extern int isa_dma_bridge_buggy; #define isa_dma_bridge_buggy (0) #endif -#endif /* _ARM_DMA_H */ +#endif /* CONFIG_ISA_DMA_API */ + +#endif /* __ASM_ARM_DMA_H */ |