serial: mxs-auart: unmap the scatter list before we copy the data

[cascardo/linux.git] / drivers / tty / serial / mxs-auart.c

diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index f56d6b9..6db23b0 100644 (file)
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -461,6 +461,8 @@ static void dma_rx_callback(void *arg)
        int count;
        u32 stat;
 
+       dma_unmap_sg(s->dev, &s->rx_sgl, 1, DMA_FROM_DEVICE);
+
        stat = readl(s->port.membase + AUART_STAT);
        stat &= ~(AUART_STAT_OERR | AUART_STAT_BERR |
                        AUART_STAT_PERR | AUART_STAT_FERR);