Merge tag 'tty-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver updates from Greg KH:
 "Here's the big tty/serial driver update for 3.19-rc1.

  There are a number of TTY core changes/fixes in here from Peter Hurley
  that have all been teted in linux-next for a long time now.  There are
  also the normal serial driver updates as well, full details in the
  changelog below"

* tag 'tty-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (219 commits)
  serial: pxa: hold port.lock when reporting modem line changes
  tty-hvsi_lib: Deletion of an unnecessary check before the function call "tty_kref_put"
  tty: Deletion of unnecessary checks before two function calls
  n_tty: Fix read_buf race condition, increment read_head after pushing data
  serial: of-serial: add PM suspend/resume support
  Revert "serial: of-serial: add PM suspend/resume support"
  Revert "serial: of-serial: fix up PM ops on no_console_suspend and port type"
  serial: 8250: don't attempt a trylock if in sysrq
  serial: core: Add big-endian iotype
  serial: samsung: use port->fifosize instead of hardcoded values
  serial: samsung: prefer to use fifosize from driver data
  serial: samsung: fix style problems
  serial: samsung: wait for transfer completion before clock disable
  serial: icom: fix error return code
  serial: tegra: clean up tty-flag assignments
  serial: Fix io address assign flow with Fintek PCI-to-UART Product
  serial: mxs-auart: fix tx_empty against shift register
  serial: mxs-auart: fix gpio change detection on interrupt
  serial: mxs-auart: Fix mxs_auart_set_ldisc()
  serial: 8250_dw: Use 64-bit access for OCTEON.
  ...

1 files changed, 19 insertions, 17 deletions

diff --git a/drivers/tty/serial/serial-tegra.c b/drivers/tty/serial/serial-tegra.c
index 53d7c31ce098..48e6e41636b2 100644
--- a/drivers/tty/serial/serial-tegra.c
+++ b/drivers/tty/serial/serial-tegra.c
@@ -319,16 +319,16 @@ static char tegra_uart_decode_rx_error(struct tegra_uart_port *tup,
 	if (unlikely(lsr & TEGRA_UART_LSR_ANY)) {
 		if (lsr & UART_LSR_OE) {
 			/* Overrrun error */
-			flag |= TTY_OVERRUN;
+			flag = TTY_OVERRUN;
 			tup->uport.icount.overrun++;
 			dev_err(tup->uport.dev, "Got overrun errors\n");
 		} else if (lsr & UART_LSR_PE) {
 			/* Parity error */
-			flag |= TTY_PARITY;
+			flag = TTY_PARITY;
 			tup->uport.icount.parity++;
 			dev_err(tup->uport.dev, "Got Parity errors\n");
 		} else if (lsr & UART_LSR_FE) {
-			flag |= TTY_FRAME;
+			flag = TTY_FRAME;
 			tup->uport.icount.frame++;
 			dev_err(tup->uport.dev, "Got frame errors\n");
 		} else if (lsr & UART_LSR_BI) {
@@ -1034,6 +1034,20 @@ fail_rx_dma:
 	return ret;
 }
 
+/*
+ * Flush any TX data submitted for DMA and PIO. Called when the
+ * TX circular buffer is reset.
+ */
+static void tegra_uart_flush_buffer(struct uart_port *u)
+{
+	struct tegra_uart_port *tup = to_tegra_uport(u);
+
+	tup->tx_bytes = 0;
+	if (tup->tx_dma_chan)
+		dmaengine_terminate_all(tup->tx_dma_chan);
+	return;
+}
+
 static void tegra_uart_shutdown(struct uart_port *u)
 {
 	struct tegra_uart_port *tup = to_tegra_uport(u);
@@ -1046,6 +1060,8 @@ static void tegra_uart_shutdown(struct uart_port *u)
 	tegra_uart_dma_channel_free(tup, true);
 	tegra_uart_dma_channel_free(tup, false);
 	free_irq(u->irq, tup);
+
+	tegra_uart_flush_buffer(u);
 }
 
 static void tegra_uart_enable_ms(struct uart_port *u)
@@ -1174,20 +1190,6 @@ static void tegra_uart_set_termios(struct uart_port *u,
 	return;
 }
 
-/*
- * Flush any TX data submitted for DMA and PIO. Called when the
- * TX circular buffer is reset.
- */
-static void tegra_uart_flush_buffer(struct uart_port *u)
-{
-	struct tegra_uart_port *tup = to_tegra_uport(u);
-
-	tup->tx_bytes = 0;
-	if (tup->tx_dma_chan)
-		dmaengine_terminate_all(tup->tx_dma_chan);
-	return;
-}
-
 static const char *tegra_uart_type(struct uart_port *u)
 {
 	return TEGRA_UART_TYPE;