From 105ef9a0af1469a9dd906839dd4628aa9c013f58 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 21 Nov 2006 22:57:23 +0100 Subject: [PATCH] [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 Signed-off-by: Russell King --- arch/arm/mm/consistent.c | 3 +++ include/asm-arm/dma-mapping.h | 4 ++++ 2 files changed, 7 insertions(+) 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); -- 2.34.1