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ee08acb58f
In order to optimize the data transfer, let's use the async DMA operation for writing (queuing) data to the host. In the async path, the completion event for the transfer ring will only be sent to the host when the controller driver notifies the MHI stack of the actual transfer completion using the callback (mhi_ep_skb_completion) supplied in "struct mhi_ep_buf_info". Also to accommodate the async operation, the transfer ring read offset (ring->rd_offset) is cached in the "struct mhi_ep_chan" and updated locally to let the stack queue further ring items to the controller driver. But the actual read offset of the transfer ring will only be updated in the completion callback. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> |
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| clocksource | ||
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