Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6

[pandora-kernel.git] / drivers / serial / atmel_serial.c

diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c
index 42be8b0..1fee12c 100644 (file)
--- a/drivers/serial/atmel_serial.c
+++ b/drivers/serial/atmel_serial.c
@@ -662,14 +662,14 @@ static void atmel_rx_from_ring(struct uart_port *port)
         * uart_start(), which takes the lock.
         */
        spin_unlock(&port->lock);
-       tty_flip_buffer_push(port->info->tty);
+       tty_flip_buffer_push(port->info->port.tty);
        spin_lock(&port->lock);
 }
 
 static void atmel_rx_from_dma(struct uart_port *port)
 {
        struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-       struct tty_struct *tty = port->info->tty;
+       struct tty_struct *tty = port->info->port.tty;
        struct atmel_dma_buffer *pdc;
        int rx_idx = atmel_port->pdc_rx_idx;
        unsigned int head;
@@ -794,7 +794,7 @@ static void atmel_tasklet_func(unsigned long data)
 static int atmel_startup(struct uart_port *port)
 {
        struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
-       struct tty_struct *tty = port->info->tty;
+       struct tty_struct *tty = port->info->port.tty;
        int retval;
 
        /*
@@ -955,6 +955,20 @@ static void atmel_shutdown(struct uart_port *port)
                atmel_close_hook(port);
 }
 
+/*
+ * Flush any TX data submitted for DMA. Called when the TX circular
+ * buffer is reset.
+ */
+static void atmel_flush_buffer(struct uart_port *port)
+{
+       struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
+
+       if (atmel_use_dma_tx(port)) {
+               UART_PUT_TCR(port, 0);
+               atmel_port->pdc_tx.ofs = 0;
+       }
+}
+
 /*
  * Power / Clock management.
  */
@@ -1189,6 +1203,7 @@ static struct uart_ops atmel_pops = {
        .break_ctl      = atmel_break_ctl,
        .startup        = atmel_startup,
        .shutdown       = atmel_shutdown,
+       .flush_buffer   = atmel_flush_buffer,
        .set_termios    = atmel_set_termios,
        .type           = atmel_type,
        .release_port   = atmel_release_port,
@@ -1439,14 +1454,29 @@ static struct uart_driver atmel_uart = {
 };
 
 #ifdef CONFIG_PM
+static bool atmel_serial_clk_will_stop(void)
+{
+#ifdef CONFIG_ARCH_AT91
+       return at91_suspend_entering_slow_clock();
+#else
+       return false;
+#endif
+}
+
 static int atmel_serial_suspend(struct platform_device *pdev,
                                pm_message_t state)
 {
        struct uart_port *port = platform_get_drvdata(pdev);
        struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
 
+       if (atmel_is_console_port(port) && console_suspend_enabled) {
+               /* Drain the TX shifter */
+               while (!(UART_GET_CSR(port) & ATMEL_US_TXEMPTY))
+                       cpu_relax();
+       }
+
        if (device_may_wakeup(&pdev->dev)
-           && !at91_suspend_entering_slow_clock())
+           && !atmel_serial_clk_will_stop())
                enable_irq_wake(port->irq);
        else {
                uart_suspend_port(&atmel_uart, port);