linux-4.4.1/dma_request_slave_channel_reason() の変更点

• 追加された行はこの色です。
• 削除された行はこの色です。
• linux-4.4.1/dma_request_slave_channel_reason() へ行く。
• linux-4.4.1/dma_request_slave_channel_reason() の差分を削除

*参照元 [#w16aa465]
#backlinks

*説明 [#a723429b]
-パス: 複数あり
--CONFIG_DMA_ENGINE 無効: [[linux-4.4.1/include/linux/dmaengine.h]]
--CONFIG_DMA_ENGINE 有効: [[linux-4.4.1/drivers/dma/dmaengine.c]]

-FIXME: これは何？
--説明


**引数 [#e05b318e]
-
--

**返り値 [#nf37f271]
-
--

**参考 [#bbf10cd6]


*実装 [#a3196dc4]

**CONFIG_DMA_ENGINE 無効: include/linux/dmaengine.h [#j193b6a6]
 static inline struct dma_chan *dma_request_slave_channel_reason(
                                         struct device *dev, const char *name)
 {
         return ERR_PTR(-ENODEV);
-
--[[linux-4.4.1/ERR_PTR()]]

 }


**CONFIG_DMA_ENGINE 有効: drivers/dma/dmaengine.c [#ib2315ea]
 /**
  * dma_request_slave_channel_reason - try to allocate an exclusive slave channel
  * @dev:        pointer to client device structure
  * @name:       slave channel name
  *
  * Returns pointer to appropriate DMA channel on success or an error pointer.
  */
 struct dma_chan *dma_request_slave_channel_reason(struct device *dev,
                                                   const char *name)
 {
         /* If device-tree is present get slave info from here */
         if (dev->of_node)
                 return of_dma_request_slave_channel(dev->of_node, name);
 
-
--[[linux-4.4.1/of_dma_request_slave_channel()]]

         /* If device was enumerated by ACPI get slave info from here */
         if (ACPI_HANDLE(dev))
                 return acpi_dma_request_slave_chan_by_name(dev, name);
 
-
--[[linux-4.4.1/ACPI_HANDLE()]]
--[[linux-4.4.1/acpi_dma_request_slave_chan_by_name()]]

         return ERR_PTR(-ENODEV);
 }
 EXPORT_SYMBOL_GPL(dma_request_slave_channel_reason);
-
--[[linux-4.4.1/EXPORT_SYMBOL_GPL()]]


*コメント [#z931d926]