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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-04-01 23:01:10 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-04-01 23:01:10 +0400
commitef99f3aee9641d10a7c80d4803d2f0f004c797ca (patch)
tree83f14ccef66db48fc4178bd8b973462006de86b8 /drivers/usb/serial/io_edgeport.c
parentcb06ff102e2d79a82cf780aa5e6947b2e0529ac0 (diff)
parent07961ac7c0ee8b546658717034fe692fd12eefa9 (diff)
downloadlinux-ef99f3aee9641d10a7c80d4803d2f0f004c797ca.tar.xz
Merge 3.9-rc5 into tty-next
We need the fixes here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/serial/io_edgeport.c')
-rw-r--r--drivers/usb/serial/io_edgeport.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index 44e5208f7c61..cf0b0a2f7b56 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -110,7 +110,6 @@ struct edgeport_port {
wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */
wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
- wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */
struct async_icount icount;
struct usb_serial_port *port; /* loop back to the owner of this object */
@@ -866,7 +865,6 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
/* initialize our wait queues */
init_waitqueue_head(&edge_port->wait_open);
init_waitqueue_head(&edge_port->wait_chase);
- init_waitqueue_head(&edge_port->delta_msr_wait);
init_waitqueue_head(&edge_port->wait_command);
/* initialize our icount structure */
@@ -1651,13 +1649,17 @@ static int edge_ioctl(struct tty_struct *tty,
dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__, port->number);
cprev = edge_port->icount;
while (1) {
- prepare_to_wait(&edge_port->delta_msr_wait,
+ prepare_to_wait(&port->delta_msr_wait,
&wait, TASK_INTERRUPTIBLE);
schedule();
- finish_wait(&edge_port->delta_msr_wait, &wait);
+ finish_wait(&port->delta_msr_wait, &wait);
/* see if a signal did it */
if (signal_pending(current))
return -ERESTARTSYS;
+
+ if (port->serial->disconnected)
+ return -EIO;
+
cnow = edge_port->icount;
if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
@@ -2033,7 +2035,7 @@ static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
icount->dcd++;
if (newMsr & EDGEPORT_MSR_DELTA_RI)
icount->rng++;
- wake_up_interruptible(&edge_port->delta_msr_wait);
+ wake_up_interruptible(&edge_port->port->delta_msr_wait);
}
/* Save the new modem status */