serial: samsung: fix maxburst parameter for DMA transactions

[platform/kernel/linux-rpi.git] / drivers / tty / serial / samsung.c

diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index 3f2f8c1..64e9692 100644 (file)
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
@@ -862,15 +862,12 @@ static int s3c24xx_serial_request_dma(struct s3c24xx_uart_port *p)
        dma->rx_conf.direction          = DMA_DEV_TO_MEM;
        dma->rx_conf.src_addr_width     = DMA_SLAVE_BUSWIDTH_1_BYTE;
        dma->rx_conf.src_addr           = p->port.mapbase + S3C2410_URXH;
-       dma->rx_conf.src_maxburst       = 16;
+       dma->rx_conf.src_maxburst       = 1;
 
        dma->tx_conf.direction          = DMA_MEM_TO_DEV;
        dma->tx_conf.dst_addr_width     = DMA_SLAVE_BUSWIDTH_1_BYTE;
        dma->tx_conf.dst_addr           = p->port.mapbase + S3C2410_UTXH;
-       if (dma_get_cache_alignment() >= 16)
-               dma->tx_conf.dst_maxburst = 16;
-       else
-               dma->tx_conf.dst_maxburst = 1;
+       dma->tx_conf.dst_maxburst       = 1;
 
        dma->rx_chan = dma_request_chan(p->port.dev, "rx");