diff options
| author | James Morris <jmorris@namei.org> | 2009-09-30 07:47:33 +1000 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2009-09-30 07:47:33 +1000 |
| commit | 1669b049db50fc7f1d4e694fb115a0f408c63fce (patch) | |
| tree | 9b3b90b5cbff9b8f30ecf0b2a44896ce8bef0c20 /drivers/usb/misc/ldusb.c | |
| parent | 7f366784f5c2b8fc0658b5b374f4c63ee42c789f (diff) | |
| parent | 17d857be649a21ca90008c6dc425d849fa83db5c (diff) | |
Merge branch 'master' into next
Diffstat (limited to 'drivers/usb/misc/ldusb.c')
| -rw-r--r-- | drivers/usb/misc/ldusb.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c index ad4fb15b5dc..90f130126c1 100644 --- a/drivers/usb/misc/ldusb.c +++ b/drivers/usb/misc/ldusb.c @@ -412,6 +412,9 @@ static unsigned int ld_usb_poll(struct file *file, poll_table *wait) dev = file->private_data; + if (!dev->intf) + return POLLERR | POLLHUP; + poll_wait(file, &dev->read_wait, wait); poll_wait(file, &dev->write_wait, wait); @@ -767,6 +770,9 @@ static void ld_usb_disconnect(struct usb_interface *intf) ld_usb_delete(dev); } else { dev->intf = NULL; + /* wake up pollers */ + wake_up_interruptible_all(&dev->read_wait); + wake_up_interruptible_all(&dev->write_wait); mutex_unlock(&dev->mutex); } |