diff options
| -rw-r--r-- | drivers/tty/serial/pch_uart.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index ae1d6b641253..e1eadf519089 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -759,21 +759,19 @@ static void pch_dma_tx_complete(void *arg) static bool pop_tx(struct eg20t_port *priv, unsigned int size) { - unsigned int count = 0; struct uart_port *port = &priv->port; struct circ_buf *xmit = &port->state->xmit; + bool ret = false; - if (uart_tx_stopped(port)) - return false; - - while (!uart_circ_empty(xmit) && count < size) { + while (!uart_tx_stopped(port) && !uart_circ_empty(xmit) && size) { iowrite8(xmit->buf[xmit->tail], priv->membase + PCH_UART_THR); xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); port->icount.tx++; - count++; + size--; + ret = true; } - return count; + return ret; } static int handle_rx_to(struct eg20t_port *priv) |