diff options
| -rwxr-xr-x | drivers/serial/tegra_hsuart.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/serial/tegra_hsuart.c b/drivers/serial/tegra_hsuart.c index 3cffbf0a1dfe..b965a00e6954 100755 --- a/drivers/serial/tegra_hsuart.c +++ b/drivers/serial/tegra_hsuart.c @@ -240,7 +240,7 @@ static void tegra_start_next_tx(struct tegra_uart_port *t) if (count == 0) goto out; - if (TX_FORCE_PIO || count < TEGRA_UART_MIN_DMA) + if (TX_FORCE_PIO || count < TEGRA_UART_MIN_DMA || !t->use_tx_dma) tegra_start_pio_tx(t, count); else if (BYTES_TO_ALIGN(tail) > 0) tegra_start_pio_tx(t, BYTES_TO_ALIGN(tail)); @@ -896,6 +896,8 @@ static int tegra_startup(struct uart_port *u) t->uport.state->xmit.buf, UART_XMIT_SIZE, DMA_TO_DEVICE); + } else { + dev_info(u->dev, "Dma allocation failed for Tx\n"); } } t->tx_in_progress = 0; @@ -904,6 +906,9 @@ static int tegra_startup(struct uart_port *u) if (!RX_FORCE_PIO) { if (!tegra_uart_init_rx_dma(t)) t->use_rx_dma = true; + else + dev_info(u->dev, "Dma allocation failed for Rx\n"); + } ret = tegra_uart_hw_init(t); |