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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2009-11-02 22:10:07 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2009-11-02 22:10:07 -0800 |
| commit | 7a53c7f56bbfc9b0ef892e68f5cfae3d902544d1 (patch) | |
| tree | 19dec256fc80ad06d631ece78b9eb68a457ce66b /drivers/usb/misc/ldusb.c | |
| parent | e57130698fe3dd2b7d617d90bbf86474473cb40c (diff) | |
| parent | 012abeea669ea49636cf952d13298bb68654146a (diff) | |
Merge commit 'v2.6.32-rc5' into for-linus
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); } |