serial: sh-sci: Stop acknowledging DMA transmit completions

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As dmaengine_prep_slave_sg() is called with the DMA_CTRL_ACK flag set
for DMA transmit requests, there's no need to explicitly acknowledge DMA
transmit requests in the DMA transmit completion callback.

Hence remove the call to async_tx_ack(), and remove the now unused
dma_async_tx_descriptor pointer in the sci_port structure.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Geert Uytterhoeven 2015-08-21 20:02:46 +02:00 • committed by Greg Kroah-Hartman

parent 565dd11aa7

commit 32f2ce031f

1 changed files with 0 additions and 5 deletions

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drivers/tty/serial/sh-sci.c

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