Merge tag 'tty-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial updates from Greg KH:
 "Here is the large tty/serial patchset for 4.13-rc1.

  A lot of tty and serial driver updates are in here, along with some
  fixups for some __get/put_user usages that were reported. Nothing
  huge, just lots of development by a number of different developers,
  full details in the shortlog.

  All of these have been in linux-next for a while"

* tag 'tty-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (71 commits)
  tty: serial: lpuart: add a more accurate baud rate calculation method
  tty: serial: lpuart: add earlycon support for imx7ulp
  tty: serial: lpuart: add imx7ulp support
  dt-bindings: serial: fsl-lpuart: add i.MX7ULP support
  tty: serial: lpuart: add little endian 32 bit register support
  tty: serial: lpuart: refactor lpuart32_{read|write} prototype
  tty: serial: lpuart: introduce lpuart_soc_data to represent SoC property
  serial: imx-serial - move DMA buffer configuration to DT
  serial: imx: Enable RTSD only when needed
  serial: imx: Remove unused members from imx_port struct
  serial: 8250: 8250_omap: Fix race b/w dma completion and RX timeout
  serial: 8250: Fix THRE flag usage for CAP_MINI
  tty/serial: meson_uart: update to stable bindings
  dt-bindings: serial: Add bindings for the Amlogic Meson UARTs
  serial: Delete dead code for CIR serial ports
  serial: sirf: make of_device_ids const
  serial/mpsc: switch to dma_alloc_attrs
  tty: serial: Add Actions Semi Owl UART earlycon
  dt-bindings: serial: Document Actions Semi Owl UARTs
  tty/serial: atmel: make the driver DT only
  ...

1 files changed, 6 insertions, 21 deletions

diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c
index b51a877da986..20d79a6007d5 100644
--- a/drivers/tty/rocket.c
+++ b/drivers/tty/rocket.c
@@ -947,18 +947,6 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
 
 		tty_port_set_initialized(&info->port, 1);
 
-		/*
-		 * Set up the tty->alt_speed kludge
-		 */
-		if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
-			tty->alt_speed = 57600;
-		if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
-			tty->alt_speed = 115200;
-		if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
-			tty->alt_speed = 230400;
-		if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
-			tty->alt_speed = 460800;
-
 		configure_r_port(tty, info, NULL);
 		if (C_BAUD(tty)) {
 			sSetDTR(cp);
@@ -1219,23 +1207,20 @@ static int set_config(struct tty_struct *tty, struct r_port *info,
 			return -EPERM;
 		}
 		info->flags = ((info->flags & ~ROCKET_USR_MASK) | (new_serial.flags & ROCKET_USR_MASK));
-		configure_r_port(tty, info, NULL);
 		mutex_unlock(&info->port.mutex);
 		return 0;
 	}
 
+	if ((new_serial.flags ^ info->flags) & ROCKET_SPD_MASK) {
+		/* warn about deprecation, unless clearing */
+		if (new_serial.flags & ROCKET_SPD_MASK)
+			dev_warn_ratelimited(tty->dev, "use of SPD flags is deprecated\n");
+	}
+
 	info->flags = ((info->flags & ~ROCKET_FLAGS) | (new_serial.flags & ROCKET_FLAGS));
 	info->port.close_delay = new_serial.close_delay;
 	info->port.closing_wait = new_serial.closing_wait;
 
-	if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)
-		tty->alt_speed = 57600;
-	if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)
-		tty->alt_speed = 115200;
-	if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)
-		tty->alt_speed = 230400;
-	if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)
-		tty->alt_speed = 460800;
 	mutex_unlock(&info->port.mutex);
 
 	configure_r_port(tty, info, NULL);