qeth network driver changes:
 - Unlock queue in qeth_do_sent_packet if there is no empty buffer
   in packing state.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>