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USB: mxu11x0: fix modem-control handling on B0-transitions

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Make sure to raise DTR and RTS on transitions from B0 and leave the
other bits unchanged.

Signed-off-by: Johan Hovold <johan@kernel.org>
This commit is contained in:
Johan Hovold 2015-12-29 13:36:13 +01:00
parent e69f7a6724
commit 9631595a25
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/serial/mxu11x0.c
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@ -595,7 +595,7 @@ static void mxu1_set_termios(struct tty_struct *tty,
if (C_BAUD(tty) == B0) if (C_BAUD(tty) == B0)
mcr &= ~(MXU1_MCR_DTR | MXU1_MCR_RTS); mcr &= ~(MXU1_MCR_DTR | MXU1_MCR_RTS);
else if (old_termios && (old_termios->c_cflag & CBAUD) == B0) else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
mcr |= ~(MXU1_MCR_DTR | MXU1_MCR_RTS); mcr |= MXU1_MCR_DTR | MXU1_MCR_RTS;
status = mxu1_set_mcr(port, mcr); status = mxu1_set_mcr(port, mcr);
if (status) if (status)