diff options
Diffstat (limited to 'drivers/tty/serial/8250/8250_dma.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250_dma.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/tty/serial/8250/8250_dma.c b/drivers/tty/serial/8250/8250_dma.c index fdb6139e8c1..7046769608d 100644 --- a/drivers/tty/serial/8250/8250_dma.c +++ b/drivers/tty/serial/8250/8250_dma.c @@ -149,8 +149,14 @@ int serial8250_request_dma(struct uart_8250_port *p) struct uart_8250_dma *dma = p->dma; dma_cap_mask_t mask; - dma->rxconf.src_addr = p->port.mapbase + UART_RX; - dma->txconf.dst_addr = p->port.mapbase + UART_TX; + /* Default slave configuration parameters */ + dma->rxconf.direction = DMA_DEV_TO_MEM; + dma->rxconf.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE; + dma->rxconf.src_addr = p->port.mapbase + UART_RX; + + dma->txconf.direction = DMA_MEM_TO_DEV; + dma->txconf.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE; + dma->txconf.dst_addr = p->port.mapbase + UART_TX; dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); |