s390/qeth: when thread completes, wake up all waiters

[ Upstream commit 1063e432bb45be209427ed3f1ca3908e4aa3c7d7 ]

qeth_wait_for_threads() is potentially called by multiple users, make
sure to notify all of them after qeth_clear_thread_running_bit()
adjusted the thread_running_mask. With no timeout, callers would
otherwise stall.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 3e7d54c..8b1763b 100644 (file)
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -957,7 +957,7 @@ void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
        spin_lock_irqsave(&card->thread_mask_lock, flags);
        card->thread_running_mask &= ~thread;
        spin_unlock_irqrestore(&card->thread_mask_lock, flags);
-       wake_up(&card->wait_q);
+       wake_up_all(&card->wait_q);
 }
 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);