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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-07-08 21:26:59 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-07-12 11:08:12 +0100
commit022ae537b23cb14a391565e9ad9e9945f4b17138 (patch)
treee167c03036fcc09d7131fa364efa70c9e3d5b92a /arch/arm/mm/mm.h
parent3973c337759cd201773a0ecc7b6f39f1ea2a6287 (diff)
downloadlinux-022ae537b23cb14a391565e9ad9e9945f4b17138.tar.gz
ARM: dma: replace ISA_DMA_THRESHOLD with a variable
ISA_DMA_THRESHOLD has been unused by non-arch code, so lets now get rid of it from ARM by replacing it with arm_dma_zone_mask. Move dma_supported() and dma_set_mask() out of line, and have dma_supported() check this new variable instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/mm.h')
-rw-r--r--arch/arm/mm/mm.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h
index 5b3d7d54365..010566799c8 100644
--- a/arch/arm/mm/mm.h
+++ b/arch/arm/mm/mm.h
@@ -23,5 +23,11 @@ extern void __flush_dcache_page(struct address_space *mapping, struct page *page
#endif
+#ifdef CONFIG_ZONE_DMA
+extern u32 arm_dma_limit;
+#else
+#define arm_dma_limit ((u32)~0)
+#endif
+
void __init bootmem_init(void);
void arm_mm_memblock_reserve(void);