Commit fb7f1bf8 authored Jun 20, 2018 by Robin Gong Committed by Greg Kroah-Hartman Jun 28, 2018

tty: serial: imx: correct dma cookie status



Correct to check the right rx dma cookie status in spit of it
works because only one cookie is running in the current sdma.
But it will not once sdma driver support multi cookies
running based on virt-dma.

Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Tested-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent e51e597d

drivers/tty/serial/imx.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1052,7 +1052,7 @@ static void imx_uart_dma_rx_callback(void *data)
		unsigned int r_bytes;
		unsigned int bd_size;

		status = dmaengine_tx_status(chan, (dma_cookie_t)0, &state);
		status = dmaengine_tx_status(chan, sport->rx_cookie, &state);

		if (status == DMA_ERROR) {
		imx_uart_clear_rx_errors(sport);