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 15:18:19 +0800 |
| commit | d0765ea47c9ab8466b8765ff768251b572670148 (patch) | |
| tree | be81ee4845606be90beeb141684d141772be6a12 /drivers/usb/class | |
| parent | fccfda602805358246118c8ed991a0cb32160d0f (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/usb/class')
| -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 6bf1a404223..1fb3d3107ca 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -545,7 +545,7 @@ 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; } |