diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-09-24 12:59:11 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-09-24 12:59:18 +0200 |
| commit | d2ff6de537c61a0f05731c6679f3e1abc2d95e68 (patch) | |
| tree | 821aa38121f57a9d5419388ef10ea6f3aa445d4d /drivers/usb/misc/ldusb.c | |
| parent | e23a8b6a8f319c0f08b6ccef2dccbb37e7603dc2 (diff) | |
| parent | a724eada8c2a7b62463b73ccf73fd0bb6e928aeb (diff) | |
Merge branch 'linus' into x86/urgent
Merge reason: Queueing up dependent early-printk fix.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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 ad4fb15b5dcb..90f130126c10 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); } |