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path: root/drivers/tty/serial/imx.c
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Diffstat (limited to 'drivers/tty/serial/imx.c')
-rw-r--r--drivers/tty/serial/imx.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 5e08f2657b90..a9e20e6c63ad 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -619,7 +619,7 @@ static void imx_uart_dma_tx(struct imx_port *sport)
dev_err(dev, "DMA mapping error for TX.\n");
return;
}
- desc = dmaengine_prep_slave_sg(chan, sgl, sport->dma_tx_nents,
+ desc = dmaengine_prep_slave_sg(chan, sgl, ret,
DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT);
if (!desc) {
dma_unmap_sg(dev, sgl, sport->dma_tx_nents,
@@ -1034,8 +1034,6 @@ static void imx_uart_timeout(struct timer_list *t)
}
}
-#define RX_BUF_SIZE (PAGE_SIZE)
-
/*
* There are two kinds of RX DMA interrupts(such as in the MX6Q):
* [1] the RX DMA buffer is full.
@@ -1118,7 +1116,8 @@ static void imx_uart_dma_rx_callback(void *data)
}
/* RX DMA buffer periods */
-#define RX_DMA_PERIODS 4
+#define RX_DMA_PERIODS 16
+#define RX_BUF_SIZE (RX_DMA_PERIODS * PAGE_SIZE / 4)
static int imx_uart_start_rx_dma(struct imx_port *sport)
{