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| author | Johan Hovold <jhovold@gmail.com> | 2013-03-19 09:21:19 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-21 15:59:04 -0700 |
| commit | e670c6af12517d08a403487b1122eecf506021cf (patch) | |
| tree | 497e4b411ad355e59d9922ba4c1955c6bfdc9c14 | |
| parent | cf1d24443677a0758cfa88ca40f24858b89261c0 (diff) | |
| download | linux-3.10-e670c6af12517d08a403487b1122eecf506021cf.tar.gz linux-3.10-e670c6af12517d08a403487b1122eecf506021cf.tar.bz2 linux-3.10-e670c6af12517d08a403487b1122eecf506021cf.zip | |
USB: mos7840: fix broken TIOCMIWAIT
Make sure waiting processes are woken on modem-status changes.
Currently processes are only woken on termios changes regardless of
whether the modem status has changed.
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/serial/mos7840.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 809fb329eca..1b83b01dfb7 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -423,6 +423,9 @@ static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) icount->rng++; smp_wmb(); } + + mos7840_port->delta_msr_cond = 1; + wake_up_interruptible(&mos7840_port->delta_msr_wait); } } @@ -2017,8 +2020,6 @@ static void mos7840_change_port_settings(struct tty_struct *tty, mos7840_port->read_urb_busy = false; } } - wake_up(&mos7840_port->delta_msr_wait); - mos7840_port->delta_msr_cond = 1; dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is End %x\n", __func__, mos7840_port->shadowLCR); } |