diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/imx.c | 13 |
1 files changed, 1 insertions, 12 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 80934e7bd67f..3964ae55e44c 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -226,7 +226,6 @@ struct imx_port { dma_cookie_t rx_cookie; unsigned int tx_bytes; unsigned int dma_tx_nents; - wait_queue_head_t dma_wait; unsigned int saved_reg[10]; bool context_saved; }; @@ -498,20 +497,12 @@ static void dma_tx_callback(void *data) sport->dma_is_txing = 0; - spin_unlock_irqrestore(&sport->port.lock, flags); - if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) uart_write_wakeup(&sport->port); - if (waitqueue_active(&sport->dma_wait)) { - wake_up(&sport->dma_wait); - dev_dbg(sport->port.dev, "exit in %s.\n", __func__); - return; - } - - spin_lock_irqsave(&sport->port.lock, flags); if (!uart_circ_empty(xmit) && !uart_tx_stopped(&sport->port)) imx_dma_tx(sport); + spin_unlock_irqrestore(&sport->port.lock, flags); } @@ -1208,8 +1199,6 @@ static void imx_enable_dma(struct imx_port *sport) { unsigned long temp; - init_waitqueue_head(&sport->dma_wait); - /* set UCR1 */ temp = readl(sport->port.membase + UCR1); temp |= UCR1_RDMAEN | UCR1_TDMAEN | UCR1_ATDMAEN; |