diff options
| author | David S. Miller <davem@davemloft.net> | 2011-02-19 19:17:35 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-02-19 19:17:35 -0800 |
| commit | da935c66bacb3ed9ada984b053297f87c2dff63a (patch) | |
| tree | 46278da2b312c73f1375b830d7e5912bf23abd78 /drivers/usb/serial/ch341.c | |
| parent | 9435eb1cf0b76b323019cebf8d16762a50a12a19 (diff) | |
| parent | 2205a6ea93fea76f88b43727fea53f3ce3790d6f (diff) | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
Documentation/feature-removal-schedule.txt
drivers/net/e1000e/netdev.c
net/xfrm/xfrm_policy.c
Diffstat (limited to 'drivers/usb/serial/ch341.c')
| -rw-r--r-- | drivers/usb/serial/ch341.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index 63f7cc45bcac..7b8815ddf368 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -486,12 +486,22 @@ static void ch341_read_int_callback(struct urb *urb) if (actual_length >= 4) { struct ch341_private *priv = usb_get_serial_port_data(port); unsigned long flags; + u8 prev_line_status = priv->line_status; spin_lock_irqsave(&priv->lock, flags); priv->line_status = (~(data[2])) & CH341_BITS_MODEM_STAT; if ((data[1] & CH341_MULT_STAT)) priv->multi_status_change = 1; spin_unlock_irqrestore(&priv->lock, flags); + + if ((priv->line_status ^ prev_line_status) & CH341_BIT_DCD) { + struct tty_struct *tty = tty_port_tty_get(&port->port); + if (tty) + usb_serial_handle_dcd_change(port, tty, + priv->line_status & CH341_BIT_DCD); + tty_kref_put(tty); + } + wake_up_interruptible(&priv->delta_msr_wait); } |