summaryrefslogtreecommitdiffstats
path: root/arch/arm/include/asm/dma.h
diff options
context:
space:
mode:
authorTejun Heo <tj@kernel.org>2011-11-28 18:46:22 +0100
committerTejun Heo <tj@kernel.org>2011-11-28 18:46:22 +0100
commitd4bbf7e7759afc172e2bfbc5c416324590049cdd (patch)
tree7eab5ee5481cd3dcf1162329fec827177640018a /arch/arm/include/asm/dma.h
parentmemblock: Cast phys_addr_t to unsigned long long for printf use (diff)
parentMerge branch 'fbdev-for-linus' of git://github.com/schandinat/linux-2.6 (diff)
downloadlinux-d4bbf7e7759afc172e2bfbc5c416324590049cdd.tar.xz
linux-d4bbf7e7759afc172e2bfbc5c416324590049cdd.zip
Merge branch 'master' into x86/memblock
Conflicts & resolutions: * arch/x86/xen/setup.c dc91c728fd "xen: allow extra memory to be in multiple regions" 24aa07882b "memblock, x86: Replace memblock_x86_reserve/free..." conflicted on xen_add_extra_mem() updates. The resolution is trivial as the latter just want to replace memblock_x86_reserve_range() with memblock_reserve(). * drivers/pci/intel-iommu.c 166e9278a3f "x86/ia64: intel-iommu: move to drivers/iommu/" 5dfe8660a3d "bootmem: Replace work_with_active_regions() with..." conflicted as the former moved the file under drivers/iommu/. Resolved by applying the chnages from the latter on the moved file. * mm/Kconfig 6661672053a "memblock: add NO_BOOTMEM config symbol" c378ddd53f9 "memblock, x86: Make ARCH_DISCARD_MEMBLOCK a config option" conflicted trivially. Both added config options. Just letting both add their own options resolves the conflict. * mm/memblock.c d1f0ece6cdc "mm/memblock.c: small function definition fixes" ed7b56a799c "memblock: Remove memblock_memory_can_coalesce()" confliected. The former updates function removed by the latter. Resolution is trivial. Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'arch/arm/include/asm/dma.h')
-rw-r--r--arch/arm/include/asm/dma.h17
1 files changed, 9 insertions, 8 deletions
diff --git a/arch/arm/include/asm/dma.h b/arch/arm/include/asm/dma.h
index 42005542932b..69a5b0b6455c 100644
--- a/arch/arm/include/asm/dma.h
+++ b/arch/arm/include/asm/dma.h
@@ -1,15 +1,16 @@
#ifndef __ASM_ARM_DMA_H
#define __ASM_ARM_DMA_H
-#include <asm/memory.h>
-
/*
* 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
@@ -33,18 +34,18 @@
#define DMA_MODE_CASCADE 0xc0
#define DMA_AUTOINIT 0x10
-extern spinlock_t dma_spin_lock;
+extern raw_spinlock_t dma_spin_lock;
static inline unsigned long claim_dma_lock(void)
{
unsigned long flags;
- spin_lock_irqsave(&dma_spin_lock, flags);
+ raw_spin_lock_irqsave(&dma_spin_lock, flags);
return flags;
}
static inline void release_dma_lock(unsigned long flags)
{
- spin_unlock_irqrestore(&dma_spin_lock, flags);
+ raw_spin_unlock_irqrestore(&dma_spin_lock, flags);
}
/* Clear the 'DMA Pointer Flip Flop'.