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| author |   Johan Hovold <johan@kernel.org> | 2017-01-06 19:15:15 +0100 |
|---|---|---|
| committer | Johan Hovold <johan@kernel.org> | 2017-01-09 14:55:39 +0100 |
| commit | 3cca8624b6624e7ffb87dcd8a0a05bef9b50e97b (patch) | |
| tree | 140e873caf7599ec4fbfe82bc6b083f25e3dd16a /drivers/usb | |
| parent | USB: serial: ch341: fix resume after reset (diff) | |
| download | linux-dev-3cca8624b6624e7ffb87dcd8a0a05bef9b50e97b.tar.xz linux-dev-3cca8624b6624e7ffb87dcd8a0a05bef9b50e97b.zip | |
USB: serial: ch341: fix line settings after reset-resume
A recent change added support for modifying the default line-control
settings, but did not make sure that the modified settings were used as
part of reconfiguration after a device has been reset during resume.
This caused a port that was open before suspend to be unusable until
being closed and reopened.
Fixes: ba781bdf8662 ("USB: serial: ch341: add support for parity, frame
length, stop bits")
Signed-off-by: Johan Hovold <johan@kernel.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/serial/ch341.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index 5343d65f3b52..eabdd05a2147 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -95,6 +95,7 @@ struct ch341_private { unsigned baud_rate; /* set baud rate */ u8 line_control; /* set line control value RTS/DTR */ u8 line_status; /* active status of modem control inputs */ + u8 lcr; }; static void ch341_set_termios(struct tty_struct *tty, @@ -232,7 +233,7 @@ static int ch341_configure(struct usb_device *dev, struct ch341_private *priv) if (r < 0) goto out; - r = ch341_init_set_baudrate(dev, priv, 0); + r = ch341_init_set_baudrate(dev, priv, priv->lcr); if (r < 0) goto out; @@ -397,6 +398,8 @@ static void ch341_set_termios(struct tty_struct *tty, if (r < 0 && old_termios) { priv->baud_rate = tty_termios_baud_rate(old_termios); tty_termios_copy_hw(&tty->termios, old_termios); + } else if (r == 0) { + priv->lcr = ctrl; } } |