diff options
| author | Bjørn Mork <bjorn@mork.no> | 2012-05-09 13:53:21 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-06-01 15:12:55 +0800 |
| commit | bfd6d6af769c5cd62aa9ed75b038ea3d234b090b (patch) | |
| tree | 6ccdc947dad33041a50ccd4d1f7e8707ee52c92d /drivers | |
| parent | 53a8734d0b66c7fb78e6cb6f0d2a559e3a255f9e (diff) | |
USB: cdc-wdm: poll must return POLLHUP if device is gone
commit 616b6937e348ef2b4c6ea5fef2cd3c441145efb0 upstream.
Else the poll will be restarted indefinitely in a tight loop,
preventing final device cleanup.
Cc: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/class/cdc-wdm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index 00b7bf9a20c..5a244cfbeb4 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -511,7 +511,7 @@ static unsigned int wdm_poll(struct file *file, struct poll_table_struct *wait) spin_lock_irqsave(&desc->iuspin, flags); if (test_bit(WDM_DISCONNECTING, &desc->flags)) { - mask = POLLERR; + mask = POLLHUP | POLLERR; spin_unlock_irqrestore(&desc->iuspin, flags); goto desc_out; } |