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[ARM] 3942/1: ARM: comment: consistent_sync should not be called directly

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/*
 * 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>
This commit is contained in:
Dan Williams 2006-11-21 22:57:23 +01:00 committed by Russell King
parent 8de35efb6a
commit 105ef9a0af
2 changed files with 7 additions and 0 deletions
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3
arch/arm/mm/consistent.c
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@ -476,6 +476,9 @@ core_initcall(consistent_init);
/* /*
* Make an area consistent for devices. * 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) void consistent_sync(void *vaddr, size_t size, int direction)
{ {

4
include/asm-arm/dma-mapping.h
View File

@ -12,6 +12,10 @@
* uncached, unwrite-buffered mapped memory space for use with DMA * uncached, unwrite-buffered mapped memory space for use with DMA
* devices. This is the "generic" version. The PCI specific version * devices. This is the "generic" version. The PCI specific version
* is in pci.h * 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); extern void consistent_sync(void *kaddr, size_t size, int rw);