tree 472eaf7f2ddc13ef41d0f0baab537564daa5edb5
parent 0b4e97269313969faf20f4c341af10d734d6d00d
author Bjørn Mork <bjorn@mork.no> 1326723117 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1328289542 -0800

USB: cdc-wdm: call wake_up_all to allow driver to shutdown on device removal

commit 62aaf24dc125d7c55c93e313d15611f152b030c7 upstream.

wdm_disconnect() waits for the mutex held by wdm_read() before
calling wake_up_all().  This causes a deadlock, preventing device removal
to complete.  Do the wake_up_all() before we start waiting for the locks.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Cc: Oliver Neukum <oliver@neukum.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>