Messages in this thread Patch in this message | | | From | Luis Henriques <> | Subject | [PATCH 044/102] USB: mos7840: fix broken TIOCMIWAIT | Date | Mon, 8 Apr 2013 10:49:59 +0100 |
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3.5.7.10 -stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold <jhovold@gmail.com>
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> [ luis: adjust context ] Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- drivers/usb/serial/mos7840.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 1b5ea51..be5f09b 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -442,6 +442,9 @@ 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); } } @@ -2096,8 +2099,6 @@ 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; dbg("mos7840_change_port_settings mos7840_port->shadowLCR is End %x", mos7840_port->shadowLCR); } -- 1.8.1.2
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