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| author | Greg Kroah-Hartman <gregkh@suse.de> | 2006-05-02 08:44:45 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-05-12 11:58:10 -0700 |
| commit | df3fccb14ad02c5fabe095a104a0323c223f2833 (patch) | |
| tree | 4db98656e7dedd27139bdb5de5e85ee847695b4a /drivers | |
| parent | 815ddc99dd8108908d14c699a37d0f5974da6def (diff) | |
| download | linux-3.10-df3fccb14ad02c5fabe095a104a0323c223f2833.tar.gz linux-3.10-df3fccb14ad02c5fabe095a104a0323c223f2833.tar.bz2 linux-3.10-df3fccb14ad02c5fabe095a104a0323c223f2833.zip | |
[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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/serial/omninet.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c index 4d40704dea2..238033a8709 100644 --- 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; |