diff options
| author | b02247 <b02247@freescale.com> | 2012-05-09 17:30:41 +0800 |
|---|---|---|
| committer | Eric Nelson <eric.nelson@boundarydevices.com> | 2013-07-05 13:01:15 -0700 |
| commit | fbe0e429ff069a4c3317ba27d2e2da6efa1736a6 (patch) | |
| tree | 28ea6457f67c5179ceb3b73134d036852d7f3782 /arch/arm/include/asm/dma-mapping.h | |
| parent | 5b1b2dd62690572afc5d806078c0fba6c735637d (diff) | |
ENGR00181680-1 No audio when play 3 streams after 3~10 seconds sometimes
sdma: bd is bufferable dma buffer, interrupt handler can not get correct
data after sdma script updated. Which will cause there is no interrupt
after failed period number times in the interrupt handler.
This is a workaround.
Signed-off-by: b02247 <b02247@freescale.com>
Diffstat (limited to 'arch/arm/include/asm/dma-mapping.h')
| -rw-r--r-- | arch/arm/include/asm/dma-mapping.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h index 635c940cd060..5eaa7a2f4240 100644 --- a/arch/arm/include/asm/dma-mapping.h +++ b/arch/arm/include/asm/dma-mapping.h @@ -173,6 +173,19 @@ static inline void dma_free_noncoherent(struct device *dev, size_t size, } /** + * dma_alloc_noncached - allocate consistent memory for DMA + * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices + * @size: required memory size + * @handle: bus-specific DMA address + * + * Allocate some uncached, unbuffered memory for a device for + * performing DMA. This function allocates pages, and will + * return the CPU-viewed address, and sets @handle to be the + * device-viewed address. + */ +extern void *dma_alloc_noncached(struct device *, size_t, dma_addr_t *, gfp_t); + +/** * dma_alloc_coherent - allocate consistent memory for DMA * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices * @size: required memory size |