tree e94a81a8da6c304891abe9b054e8c9009ca62c76
parent 658daa95b6aec9c06e1d8c4b99d89b186e4b2e72
author Geert Uytterhoeven <geert+renesas@glider.be> 1440180168 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1443976428 +0100

serial: sh-sci: Do not resubmit DMA descriptors

Resubmission of DMA descriptors is explicitly forbidden by the DMA
engine API.

Hence pass DMA_CTRL_ACK to dmaengine_prep_slave_sg(), and prepare a new
DMA descriptor instead of reusing the old one.
Remove sci_port.desc_rx[], as there's no longer a need to access the
active descriptor.

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