dma_mapping_error
You should call dma_mapping_error() as dma_map_page() could fail and return error as outlined under the dma_map_single() discussion. You should call ... , I found several dma_mapping_error() defines in various arch specific dma-mapping.h files. Majority of these arch specific defines look identical ..., 虽然并不是所有的DMA mapping实现都支持dma_mapping_error这个接口（调用dma_mapping_error函数实际上会调用底层dma_map_ops操作 ...,int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) In some circumstances dma_map_single(), dma_map_page() and dma_map_resource() will ... ,Defined in 24 files: arch/alpha/include/asm/dma-mapping.h, line 33 (as a function) · arch/arm/include/asm/dma-mapping.h, line 92 (as a function) ... ,Defined in 27 files: arch/alpha/include/asm/dma-mapping.h, line 33 (as a function) · arch/arc/include/asm/dma-mapping.h, line 206 (as a function) ... ,Defined in 1 files: include/linux/dma-mapping.h, line 428 (as a function). Referenced in 223 files: arch/arm/common/dmabounce.c, line 215 ... ,Defined in 2 files: include/linux/dma-mapping.h, line 517 (as a function) · tools/virtio/linux/dma-mapping.h, line 28 (as a macro) ... ,Defined in 3 files: include/linux/dma-mapping.h, line 436 (as a function) · include/linux/dma-mapping.h, line 515 (as a function) · tools/virtio/linux/dma-mapping.h, ... ,[03/24] dma-mapping: provide a generic DMA_MAPPING_ERROR ... device *dev); }; +#define DMA_MAPPING_ERROR (~(dma_addr_t)0) + extern const struct ...
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 dma_mapping_error 相關參考資料
DMA API documentation - Kernel.org
You should call dma_mapping_error() as dma_map_page() could fail and return error as outlined under the dma_map_single() discussion. You should call ... https://www.kernel.org dma_mapping_error() interfaces - Linux-Kernel Archive
I found several dma_mapping_error() defines in various arch specific dma-mapping.h files. Majority of these arch specific defines look identical ... http://lkml.iu.edu Dynamic DMA mapping Guide - 蜗窝科技
虽然并不是所有的DMA mapping实现都支持dma_mapping_error这个接口（调用dma_mapping_error函数实际上会调用底层dma_map_ops操作 ... http://www.wowotech.net here - The Linux Kernel Archives
int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) In some circumstances dma_map_single(), dma_map_page() and dma_map_resource() will ... https://www.kernel.org Linux source code: dma_mapping_error identifier (v3.7) - Bootlin
Defined in 24 files: arch/alpha/include/asm/dma-mapping.h, line 33 (as a function) · arch/arm/include/asm/dma-mapping.h, line 92 (as a function) ... https://elixir.bootlin.com Linux source code: dma_mapping_error identifier (v3.9) - Bootlin
Defined in 27 files: arch/alpha/include/asm/dma-mapping.h, line 33 (as a function) · arch/arc/include/asm/dma-mapping.h, line 206 (as a function) ... https://elixir.bootlin.com Linux source code: dma_mapping_error identifier (v4.6) - Bootlin
Defined in 1 files: include/linux/dma-mapping.h, line 428 (as a function). Referenced in 223 files: arch/arm/common/dmabounce.c, line 215 ... https://elixir.bootlin.com Linux source code: dma_mapping_error identifier (v4.9) - Bootlin
Defined in 2 files: include/linux/dma-mapping.h, line 517 (as a function) · tools/virtio/linux/dma-mapping.h, line 28 (as a macro) ... https://elixir.bootlin.com Linux source code: dma_mapping_error identifier (v5.4.10 ...
Defined in 3 files: include/linux/dma-mapping.h, line 436 (as a function) · include/linux/dma-mapping.h, line 515 (as a function) · tools/virtio/linux/dma-mapping.h, ... https://elixir.bootlin.com [0324] dma-mapping: provide a generic ... - Patchwork
[03/24] dma-mapping: provide a generic DMA_MAPPING_ERROR ... device *dev); }; +#define DMA_MAPPING_ERROR (~(dma_addr_t)0) + extern const struct ... https://patchwork.kernel.org |