diff options
author | Johan Hovold <jhovold@gmail.com> | 2013-03-19 08:21:19 (GMT) |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-04-05 16:26:03 (GMT) |
commit | dfa7981463bbf902057c7c2b36c1e9e98f1651c4 (patch) | |
tree | a0ed635a7fbd51ecf885daf46923f37df89501e1 /drivers/usb | |
parent | 957bed048fad74aa91c50420dc9c587d08f3ab38 (diff) | |
download | linux-fsl-qoriq-dfa7981463bbf902057c7c2b36c1e9e98f1651c4.tar.xz |
USB: mos7840: fix broken TIOCMIWAIT
commit e670c6af12517d08a403487b1122eecf506021cf upstream.
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.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
-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 66d9e08..f7ede58 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); } } @@ -2021,8 +2024,6 @@ 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); } |