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USB: serial: whiteheat: fix line-speed endianness 

Add missing endianness conversion when setting the line speed so that
this driver might work also on big-endian machines.

Also use an unsigned format specifier in the corresponding debug
message.

Signed-off-by: Johan Hovold <johan@kernel.org>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20191029102354.2733-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2019-10-29 11:23:54 +01:00 committed by Greg Kroah-Hartman
parent 1251dab9e0
commit 84968291d7
2 changed files with 7 additions and 4 deletions
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9
drivers/usb/serial/whiteheat.c
View File

@ -636,6 +636,7 @@ static void firm_setup_port(struct tty_struct *tty)
struct device *dev = &port->dev;
struct whiteheat_port_settings port_settings;
unsigned int cflag = tty->termios.c_cflag;
speed_t baud;
port_settings.port = port->port_number + 1;
@ -696,11 +697,13 @@ static void firm_setup_port(struct tty_struct *tty)
dev_dbg(dev, "%s - XON = %2x, XOFF = %2x\n", __func__, port_settings.xon, port_settings.xoff);
/* get the baud rate wanted */
port_settings.baud = tty_get_baud_rate(tty);
dev_dbg(dev, "%s - baud rate = %d\n", __func__, port_settings.baud);
baud = tty_get_baud_rate(tty);
port_settings.baud = cpu_to_le32(baud);
dev_dbg(dev, "%s - baud rate = %u\n", __func__, baud);
/* fixme: should set validated settings */
tty_encode_baud_rate(tty, port_settings.baud, port_settings.baud);
tty_encode_baud_rate(tty, baud, baud);
/* handle any settings that aren't specified in the tty structure */
port_settings.lloop = 0;

2
drivers/usb/serial/whiteheat.h
View File

@ -87,7 +87,7 @@ struct whiteheat_simple {
struct whiteheat_port_settings {
__u8 port; /* port number (1 to N) */
__u32 baud; /* any value 7 - 460800, firmware calculates
__le32 baud; /* any value 7 - 460800, firmware calculates
best fit; arrives little endian */
__u8 bits; /* 5, 6, 7, or 8 */
__u8 stop; /* 1 or 2, default 1 (2 = 1.5 if bits = 5) */