serial: sh-sci: Handle DMA init failures inside sci_request_dma()

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Let sci_request_dma() handle failures to initialize DMA itself.
This way sci_tx_dma_release() and sci_rx_dma_release() don't have to
consider partial initialization, and thus don't need to reset DMA
addresses to DMA_ERROR_CODE, which is not 100% portable access
architectures.

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 20:02:39 +02:00 • committed by Greg Kroah-Hartman

parent f5835c1d0e

commit b925802026

1 changed files with 7 additions and 5 deletions

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drivers/tty/serial/sh-sci.c

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