From: Johan Hovold Date: Tue, 6 Jun 2017 10:54:37 +0000 (+0200) Subject: tty: amiserial: drop broken alt-speed support X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6086380a5576239bd5bfaa175364550b38223ba6;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git tty: amiserial: drop broken alt-speed support Setting an alt_speed using the ASYNC_SPD flags has been deprecated since v2.1.69, and has been broken since v3.10 and commit 6865ff222cca ("TTY: do not warn about setting speed via SPD_*") without anyone noticing. Drop the broken alt-speed handling altogether, and add a ratelimited warning about using TIOCCSERIAL to change speed as being deprecated. Note that using ASYNC_SPD_CUST is still supported. Signed-off-by: Johan Hovold Reviewed-by: Andy Shevchenko Reviewed-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c index dea16bb8c46a..9820e20993db 100644 --- a/drivers/tty/amiserial.c +++ b/drivers/tty/amiserial.c @@ -569,18 +569,6 @@ static int startup(struct tty_struct *tty, struct serial_state *info) clear_bit(TTY_IO_ERROR, &tty->flags); info->xmit.head = info->xmit.tail = 0; - /* - * Set up the tty->alt_speed kludge - */ - if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) - tty->alt_speed = 57600; - if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) - tty->alt_speed = 115200; - if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) - tty->alt_speed = 230400; - if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) - tty->alt_speed = 460800; - /* * and set the speed of the serial port */ @@ -1084,14 +1072,9 @@ static int set_serial_info(struct tty_struct *tty, struct serial_state *state, check_and_exit: if (tty_port_initialized(port)) { if (change_spd) { - if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) - tty->alt_speed = 57600; - if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) - tty->alt_speed = 115200; - if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) - tty->alt_speed = 230400; - if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) - tty->alt_speed = 460800; + /* warn about deprecation unless clearing */ + if (new_serial.flags & ASYNC_SPD_MASK) + dev_warn_ratelimited(tty->dev, "use of SPD flags is deprecated\n"); change_speed(tty, state, NULL); } } else