diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2006-11-21 22:57:23 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-11-22 22:45:57 +0000 |
| commit | 105ef9a0af1469a9dd906839dd4628aa9c013f58 (patch) | |
| tree | 932c93e6fe5c11866b2b6348360a61f4528a0de1 | |
| parent | 8de35efb6afa75f25415d54e21221eea759db261 (diff) | |
[ARM] 3942/1: ARM: comment: consistent_sync should not be called directly
/*
* Note: Drivers should NOT use this function directly, as it will break
* platforms with CONFIG_DMABOUNCE.
* Use the driver DMA support - see dma-mapping.h (dma_sync_*)
*/
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/mm/consistent.c | 3 | ||||
| -rw-r--r-- | include/asm-arm/dma-mapping.h | 4 |
2 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/mm/consistent.c b/arch/arm/mm/consistent.c index 50e6b6bfb2e2..b797217e82be 100644 --- a/arch/arm/mm/consistent.c +++ b/arch/arm/mm/consistent.c @@ -476,6 +476,9 @@ core_initcall(consistent_init); /* * Make an area consistent for devices. + * Note: Drivers should NOT use this function directly, as it will break + * platforms with CONFIG_DMABOUNCE. + * Use the driver DMA support - see dma-mapping.h (dma_sync_*) */ void consistent_sync(void *vaddr, size_t size, int direction) { diff --git a/include/asm-arm/dma-mapping.h b/include/asm-arm/dma-mapping.h index 55eb4dc3253d..666617711c81 100644 --- a/include/asm-arm/dma-mapping.h +++ b/include/asm-arm/dma-mapping.h @@ -12,6 +12,10 @@ * uncached, unwrite-buffered mapped memory space for use with DMA * devices. This is the "generic" version. The PCI specific version * is in pci.h + * + * Note: Drivers should NOT use this function directly, as it will break + * platforms with CONFIG_DMABOUNCE. + * Use the driver DMA support - see dma-mapping.h (dma_sync_*) */ extern void consistent_sync(void *kaddr, size_t size, int rw); |