[v2,13/13] tty: pruss SUART driver

Commit Message

Subhasish Ghosh Feb. 22, 2011, 8:43 a.m. UTC

None

Patch

diff --git a/drivers/tty/serial/da8xx_pruss/pruss_suart.c 
b/drivers/tty/serial/da8xx_pruss/pruss_suart.c
index d222e2e..edc3863 100644
--- a/drivers/tty/serial/da8xx_pruss/pruss_suart.c
+++ b/drivers/tty/serial/da8xx_pruss/pruss_suart.c
@@ -72,7 +72,7 @@  struct suart_fifo {
 struct omapl_pru_suart {
        struct uart_port port[NR_SUART];
        struct device *dev; /* pdev->dev */
-       struct semaphore port_sem[NR_SUART];
+       bool tx_empty[NR_SUART];
        struct clk *clk_mcasp;
        struct suart_fifo suart_fifo_addr[NR_SUART];
        const struct firmware *fw;
@@ -122,13 +122,10 @@  static void omapl_pru_tx_chars(struct omapl_pru_suart 
*soft_uart, u32 uart_no)
        if (!(suart_get_duplex(soft_uart, uart_no) & ePRU_SUART_HALF_TX))
                return;

-       if (down_trylock(&soft_uart->port_sem[uart_no]))
-               return;
-
        if (uart_circ_empty(xmit) ||
                        uart_tx_stopped(&soft_uart->port[uart_no])) {
                pruss_suart_stop_tx(&soft_uart->port[uart_no]);
-               up(&soft_uart->port_sem[uart_no]);
+               soft_uart->tx_empty[uart_no] = true;
                return;
        }