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| author | David S. Miller <davem@davemloft.net> | 2013-03-27 13:52:49 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-03-27 13:52:49 -0400 |
| commit | e2a553dbf18a5177fdebe29495c32a8e7fd3a4db (patch) | |
| tree | 5ccb3d498325a7aaf93f49549eca03cb7861ca1c /drivers/usb/serial/cypress_m8.c | |
| parent | 7559d97993ae7d552c96313155286f372cf4cf7c (diff) | |
| parent | a8c45289f215e137825bf9630d0abb41c1dc41ff (diff) | |
| download | olio-linux-3.10-e2a553dbf18a5177fdebe29495c32a8e7fd3a4db.tar.xz olio-linux-3.10-e2a553dbf18a5177fdebe29495c32a8e7fd3a4db.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
include/net/ipip.h
The changes made to ipip.h in 'net' were already included
in 'net-next' before that header was moved to another location.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/usb/serial/cypress_m8.c')
| -rw-r--r-- | drivers/usb/serial/cypress_m8.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index 8efa19d0e9f..ba7352e4187 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -111,7 +111,6 @@ struct cypress_private { int baud_rate; /* stores current baud rate in integer form */ int isthrottled; /* if throttled, discard reads */ - wait_queue_head_t delta_msr_wait; /* used for TIOCMIWAIT */ char prev_status, diff_status; /* used for TIOCMIWAIT */ /* we pass a pointer to this as the argument sent to cypress_set_termios old_termios */ @@ -449,7 +448,6 @@ static int cypress_generic_port_probe(struct usb_serial_port *port) kfree(priv); return -ENOMEM; } - init_waitqueue_head(&priv->delta_msr_wait); usb_reset_configuration(serial->dev); @@ -868,12 +866,16 @@ static int cypress_ioctl(struct tty_struct *tty, switch (cmd) { /* This code comes from drivers/char/serial.c and ftdi_sio.c */ case TIOCMIWAIT: - while (priv != NULL) { - interruptible_sleep_on(&priv->delta_msr_wait); + for (;;) { + interruptible_sleep_on(&port->delta_msr_wait); /* see if a signal did it */ if (signal_pending(current)) return -ERESTARTSYS; - else { + + if (port->serial->disconnected) + return -EIO; + + { char diff = priv->diff_status; if (diff == 0) return -EIO; /* no change => error */ @@ -1187,7 +1189,7 @@ static void cypress_read_int_callback(struct urb *urb) if (priv->current_status != priv->prev_status) { priv->diff_status |= priv->current_status ^ priv->prev_status; - wake_up_interruptible(&priv->delta_msr_wait); + wake_up_interruptible(&port->delta_msr_wait); priv->prev_status = priv->current_status; } spin_unlock_irqrestore(&priv->lock, flags); |