serial: sh-sci: Extract sci_dma_rx_chan_invalidate()

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The cookies and channel pointer for the DMA receive channel are
invalidated in two places, and one more is planned.
Extract this functionality in a common helper.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Geert Uytterhoeven 2019-01-07 17:23:17 +01:00 • committed by Greg Kroah-Hartman

parent 833954a4e3

commit 11b3770d54

1 changed files with 13 additions and 6 deletions

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drivers/tty/serial/sh-sci.c

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