From 526af95e45ab5d0c0f1ae8fafc5edf1ee9c4e879 Mon Sep 17 00:00:00 2001 From: Robin Gong Date: Wed, 24 Mar 2021 01:02:44 +0800 Subject: [PATCH] tty: serial: imx: add peripheral_config/peripheral_size for config Add peripheral_config/peripheral_size for sdma, otherwise, the random value of local variable slave_config may cause unexpected peripheral_config and make sdma mess up. Signed-off-by: Robin Gong Reviewed-by: Sherry Sun (cherry picked from commit ba33de1c9535416f702fbf8bcbcef17f9cced409) --- drivers/tty/serial/imx.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 61e357a05c12..99cf61371a66 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -1356,6 +1356,8 @@ static int imx_uart_dma_init(struct imx_port *sport) slave_config.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE; /* one byte less than the watermark level to enable the aging timer */ slave_config.src_maxburst = RXTL_DMA - 1; + slave_config.peripheral_config = NULL; + slave_config.peripheral_size = 0; ret = dmaengine_slave_config(sport->dma_chan_rx, &slave_config); if (ret) { dev_err(dev, "error in RX dma configuration.\n"); @@ -1381,6 +1383,8 @@ static int imx_uart_dma_init(struct imx_port *sport) slave_config.dst_addr = sport->port.mapbase + URTX0; slave_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE; slave_config.dst_maxburst = TXTL_DMA; + slave_config.peripheral_config = NULL; + slave_config.peripheral_size = 0; ret = dmaengine_slave_config(sport->dma_chan_tx, &slave_config); if (ret) { dev_err(dev, "error in TX dma configuration."); -- 2.17.1