On 09/17/14 21:15, Liu Hua wrote:
> dma_mapping_error takes two parameters, but some of examples
> in Documentation/DMA-API-HOWTO.txt just takes one. So correct
> it.
>
> Signed-off-by: Liu Hua <sdu.liu@xxxxxxxxxx>
Acked-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Thanks.
Jiri, please apply this patch. Thanks.
> ---
> Documentation/DMA-API-HOWTO.txt | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/DMA-API-HOWTO.txt b/Documentation/DMA-API-HOWTO.txt
> index dcbbe36..0f7afb2 100644
> --- a/Documentation/DMA-API-HOWTO.txt
> +++ b/Documentation/DMA-API-HOWTO.txt
> @@ -531,7 +531,7 @@ To map a single region, you do:
> size_t size = buffer->len;
>
> dma_handle = dma_map_single(dev, addr, size, direction);
> - if (dma_mapping_error(dma_handle)) {
> + if (dma_mapping_error(dev, dma_handle)) {
> /*
> * reduce current DMA mapping usage,
> * delay and try again later or
> @@ -588,7 +588,7 @@ Specifically:
> size_t size = buffer->len;
>
> dma_handle = dma_map_page(dev, page, offset, size, direction);
> - if (dma_mapping_error(dma_handle)) {
> + if (dma_mapping_error(dev, dma_handle)) {
> /*
> * reduce current DMA mapping usage,
> * delay and try again later or
> @@ -689,7 +689,7 @@ to use the dma_sync_*() interfaces.
> dma_addr_t mapping;
>
> mapping = dma_map_single(cp->dev, buffer, len, DMA_FROM_DEVICE);
> - if (dma_mapping_error(dma_handle)) {
> + if (dma_mapping_error(cp->dev, dma_handle)) {
> /*
> * reduce current DMA mapping usage,
> * delay and try again later or
>
--
~Randy
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