diff options
| author | Nicolas Pitre <nico@fluxnic.net> | 2011-07-18 23:05:10 +0400 |
|---|---|---|
| committer | Nicolas Pitre <nico@fluxnic.net> | 2011-07-18 23:29:41 +0400 |
| commit | 650320181a08b64d4421c65c639cf47ad8cc2cd6 (patch) | |
| tree | 5458b989faf4dd0a1216e07da3a76d9d30885c03 /arch/arm/include/asm | |
| parent | 022ae537b23cb14a391565e9ad9e9945f4b17138 (diff) | |
| download | linux-650320181a08b64d4421c65c639cf47ad8cc2cd6.tar.xz | |
ARM: change ARM_DMA_ZONE_SIZE into a variable
Having this value defined at compile time prevents multiple machines with
conflicting definitions to coexist. Move it to a variable in preparation
for having a per machine value selected at run time. This is relevant
only when CONFIG_ZONE_DMA is selected.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Diffstat (limited to 'arch/arm/include/asm')
| -rw-r--r-- | arch/arm/include/asm/dma.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/arm/include/asm/dma.h b/arch/arm/include/asm/dma.h index 42005542932b..fcf15de8cadb 100644 --- a/arch/arm/include/asm/dma.h +++ b/arch/arm/include/asm/dma.h @@ -6,10 +6,13 @@ /* * This is the maximum virtual address which can be DMA'd from. */ -#ifndef ARM_DMA_ZONE_SIZE -#define MAX_DMA_ADDRESS 0xffffffff +#ifndef CONFIG_ZONE_DMA +#define MAX_DMA_ADDRESS 0xffffffffUL #else -#define MAX_DMA_ADDRESS (PAGE_OFFSET + ARM_DMA_ZONE_SIZE) +#define MAX_DMA_ADDRESS ({ \ + extern unsigned long arm_dma_zone_size; \ + arm_dma_zone_size ? \ + (PAGE_OFFSET + arm_dma_zone_size) : 0xffffffffUL; }) #endif #ifdef CONFIG_ISA_DMA_API |