diff options
| author | Oliver Neukum <oliver@neukum.org> | 2008-01-23 11:28:45 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-02-01 22:35:05 (GMT) |
| commit | 0915f490d81c1a5098b399ec6c0be45bd421ee1d (patch) | |
| tree | 840285ec52dba9ae65757b27c68ee3933c041ff3 /drivers/usb/serial/ti_usb_3410_5052.c | |
| parent | 3edbc986509888fa9977cc180c1fe458d2f89076 (diff) | |
| download | linux-0915f490d81c1a5098b399ec6c0be45bd421ee1d.tar.xz | |
USB: last abuses of intfdata in close for usb-serial drivers
these drivers abused intfdata in close() as flags for binding.
That races with reprobing of those devices. This patch fixes that by using
the flag and the locks introduced with the patch against mos7720.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial/ti_usb_3410_5052.c')
| -rw-r--r-- | drivers/usb/serial/ti_usb_3410_5052.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index 70f56c8..b517f93 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -1493,11 +1493,10 @@ static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush) struct ti_device *tdev = tport->tp_tdev; struct usb_serial_port *port = tport->tp_port; wait_queue_t wait; - unsigned long flags; dbg("%s - port %d", __FUNCTION__, port->number); - spin_lock_irqsave(&tport->tp_lock, flags); + spin_lock_irq(&tport->tp_lock); /* wait for data to drain from the buffer */ tdev->td_urb_error = 0; @@ -1508,11 +1507,11 @@ static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush) if (ti_buf_data_avail(tport->tp_write_buf) == 0 || timeout == 0 || signal_pending(current) || tdev->td_urb_error - || !usb_get_intfdata(port->serial->interface)) /* disconnect */ + || port->serial->disconnected) /* disconnect */ break; - spin_unlock_irqrestore(&tport->tp_lock, flags); + spin_unlock_irq(&tport->tp_lock); timeout = schedule_timeout(timeout); - spin_lock_irqsave(&tport->tp_lock, flags); + spin_lock_irq(&tport->tp_lock); } set_current_state(TASK_RUNNING); remove_wait_queue(&tport->tp_write_wait, &wait); @@ -1521,19 +1520,23 @@ static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush) if (flush) ti_buf_clear(tport->tp_write_buf); - spin_unlock_irqrestore(&tport->tp_lock, flags); + spin_unlock_irq(&tport->tp_lock); + mutex_lock(&port->serial->disc_mutex); /* wait for data to drain from the device */ /* wait for empty tx register, plus 20 ms */ timeout += jiffies; tport->tp_lsr &= ~TI_LSR_TX_EMPTY; while ((long)(jiffies - timeout) < 0 && !signal_pending(current) && !(tport->tp_lsr&TI_LSR_TX_EMPTY) && !tdev->td_urb_error - && usb_get_intfdata(port->serial->interface)) { /* not disconnected */ + && !port->serial->disconnected) { if (ti_get_lsr(tport)) break; + mutex_unlock(&port->serial->disc_mutex); msleep_interruptible(20); + mutex_lock(&port->serial->disc_mutex); } + mutex_unlock(&port->serial->disc_mutex); } |