[PATCH] USB: fix omninet driver bug

I introduced this way back in 2.6.13 when adding the port lock logic.
This device talks out through different "ports" all at the same time, so
the lock logic was wrong, preventing any data from ever being sent
properly.

Thanks a lot to Bernhard Reiter <bernhard@intevation.de> for being
patient and helping with debugging this.

Cc: Bernhard Reiter <bernhard@intevation.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c
index 4d40704..238033a 100644 (file)
--- a/drivers/usb/serial/omninet.c
+++ b/drivers/usb/serial/omninet.c
@@ -257,14 +257,14 @@ static int omninet_write (struct usb_serial_port *port, const unsigned char *buf
                return (0);
        }
 
-       spin_lock(&port->lock);
-       if (port->write_urb_busy) {
-               spin_unlock(&port->lock);
+       spin_lock(&wport->lock);
+       if (wport->write_urb_busy) {
+               spin_unlock(&wport->lock);
                dbg("%s - already writing", __FUNCTION__);
                return 0;
        }
-       port->write_urb_busy = 1;
-       spin_unlock(&port->lock);
+       wport->write_urb_busy = 1;
+       spin_unlock(&wport->lock);
 
        count = (count > OMNINET_BULKOUTSIZE) ? OMNINET_BULKOUTSIZE : count;
 
@@ -283,7 +283,7 @@ static int omninet_write (struct usb_serial_port *port, const unsigned char *buf
        wport->write_urb->dev = serial->dev;
        result = usb_submit_urb(wport->write_urb, GFP_ATOMIC);
        if (result) {
-               port->write_urb_busy = 0;
+               wport->write_urb_busy = 0;
                err("%s - failed submitting write urb, error %d", __FUNCTION__, result);
        } else
                result = count;