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serial: sh-sci: Drop superfluous assignment in sci_request_dma()

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No later code uses the assigned value, so it can be dropped.

Reported-by: Simon Horman <horms@verge.net.au>
Fixes: 2c4ee23530ffc022 ("serial: sh-sci: Postpone DMA release when falling back to PIO")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Geert Uytterhoeven 2018-07-20 14:18:26 +02:00 committed by Greg Kroah-Hartman
parent 26f22d5748
commit ac8a103e69
1 changed files with 0 additions and 1 deletions
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drivers/tty/serial/sh-sci.c
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@ -1574,7 +1574,6 @@ static void sci_request_dma(struct uart_port *port)
if (dma_mapping_error(chan->device->dev, s->tx_dma_addr)) { if (dma_mapping_error(chan->device->dev, s->tx_dma_addr)) {
dev_warn(port->dev, "Failed mapping Tx DMA descriptor\n"); dev_warn(port->dev, "Failed mapping Tx DMA descriptor\n");
dma_release_channel(chan); dma_release_channel(chan);
chan = NULL;
} else { } else {
dev_dbg(port->dev, "%s: mapped %lu@%p to %pad\n", dev_dbg(port->dev, "%s: mapped %lu@%p to %pad\n",
__func__, UART_XMIT_SIZE, __func__, UART_XMIT_SIZE,