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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2010-09-22 13:04:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-09-22 17:22:38 -0700
commit710224fa2750cf449c02dd115548acebfdd2c86a (patch)
tree3caa498384daec3b2e40adb4a89d7f854f2adb7c /arch/arm/mach-ixp4xx/include
parentc227e69028473c7c7994a9b0a2cc0034f3f7e0fe (diff)
arm: fix "arm: fix pci_set_consistent_dma_mask for dmabounce devices"
This fixes the regression caused by the commit 6fee48cd330c68 ("dma-mapping: arm: use generic pci_set_dma_mask and pci_set_consistent_dma_mask"). ARM needs to clip the dma coherent mask for dmabounce devices. This restores the old trick. Note that strictly speaking, the DMA API doesn't allow architectures to do such but I'm not sure it's worth adding the new API to set the dma mask that allows architectures to clip it. Reported-by: Krzysztof Halasa <khc@pm.waw.pl> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/arm/mach-ixp4xx/include')
-rw-r--r--arch/arm/mach-ixp4xx/include/mach/hardware.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp4xx/include/mach/hardware.h b/arch/arm/mach-ixp4xx/include/mach/hardware.h
index f91ca6d4fbe..8138371c406 100644
--- a/arch/arm/mach-ixp4xx/include/mach/hardware.h
+++ b/arch/arm/mach-ixp4xx/include/mach/hardware.h
@@ -26,6 +26,8 @@
#define PCIBIOS_MAX_MEM 0x4BFFFFFF
#endif
+#define ARCH_HAS_DMA_SET_COHERENT_MASK
+
#define pcibios_assign_all_busses() 1
/* Register locations and bits */