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| author | Oliver Neukum <oneukum@suse.de> | 2007-03-20 13:41:21 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-04-27 13:28:37 -0700 |
| commit | 7d28e74b97c8eb859fd9f5eb018bb1c75627bd55 (patch) | |
| tree | 4c574a625a044bf3d6dc1ebd7cbacbb4a1f0732f /drivers/usb | |
| parent | 4f93b3e8212df43ff380e118aebb68f6d1e5b060 (diff) | |
| download | blackbird-op-linux-7d28e74b97c8eb859fd9f5eb018bb1c75627bd55.tar.gz blackbird-op-linux-7d28e74b97c8eb859fd9f5eb018bb1c75627bd55.zip | |
USB: option close race
the option driver does not directly use usb_kill_urb(). It uses a wrapper.
This wrapper means that callbacks which are running are not killed during
close, resubmitting and illicitly pushing data into the tty layer.
The whole purpose of usb_kill_urb() is subverted. The wrapper must be removed.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Matthias Urlichs <smurf@smurf.noris.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/serial/option.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index e178e6f40319..2846656d8358 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -591,12 +591,6 @@ static int option_open(struct usb_serial_port *port, struct file *filp) return (0); } -static inline void stop_urb(struct urb *urb) -{ - if (urb && urb->status == -EINPROGRESS) - usb_kill_urb(urb); -} - static void option_close(struct usb_serial_port *port, struct file *filp) { int i; @@ -614,9 +608,9 @@ static void option_close(struct usb_serial_port *port, struct file *filp) /* Stop reading/writing urbs */ for (i = 0; i < N_IN_URB; i++) - stop_urb(portdata->in_urbs[i]); + usb_kill_urb(portdata->in_urbs[i]); for (i = 0; i < N_OUT_URB; i++) - stop_urb(portdata->out_urbs[i]); + usb_kill_urb(portdata->out_urbs[i]); } port->tty = NULL; } @@ -747,9 +741,9 @@ static void option_shutdown(struct usb_serial *serial) port = serial->port[i]; portdata = usb_get_serial_port_data(port); for (j = 0; j < N_IN_URB; j++) - stop_urb(portdata->in_urbs[j]); + usb_kill_urb(portdata->in_urbs[j]); for (j = 0; j < N_OUT_URB; j++) - stop_urb(portdata->out_urbs[j]); + usb_kill_urb(portdata->out_urbs[j]); } /* Now free them */ |
