From: Frank Blaschka State transition to DEV_STATE_STOPPED indicates all outstanding I/O has finished. Add wait queue to wait for this state. Signed-off-by: Frank Blaschka Signed-off-by: Ursula Braun --- drivers/s390/net/ctcm_main.c | 5 +++++ drivers/s390/net/fsm.c | 1 + drivers/s390/net/fsm.h | 2 ++ 3 files changed, 8 insertions(+) diff -urpN linux-2.6/drivers/s390/net/ctcm_main.c linux-2.6-patched/drivers/s390/net/ctcm_main.c --- linux-2.6/drivers/s390/net/ctcm_main.c 2009-11-12 14:59:32.000000000 +0100 +++ linux-2.6-patched/drivers/s390/net/ctcm_main.c 2009-11-12 14:59:32.000000000 +0100 @@ -1720,6 +1720,11 @@ static int ctcm_pm_suspend(struct ccwgro return 0; netif_device_detach(priv->channel[READ]->netdev); ctcm_close(priv->channel[READ]->netdev); + if (!wait_event_timeout(priv->fsm->wait_q, + fsm_getstate(priv->fsm) == DEV_STATE_STOPPED, CTCM_TIME_5_SEC)) { + netif_device_attach(priv->channel[READ]->netdev); + return -EBUSY; + } ccw_device_set_offline(gdev->cdev[1]); ccw_device_set_offline(gdev->cdev[0]); return 0; diff -urpN linux-2.6/drivers/s390/net/fsm.c linux-2.6-patched/drivers/s390/net/fsm.c --- linux-2.6/drivers/s390/net/fsm.c 2009-09-10 00:13:59.000000000 +0200 +++ linux-2.6-patched/drivers/s390/net/fsm.c 2009-11-12 14:59:32.000000000 +0100 @@ -27,6 +27,7 @@ init_fsm(char *name, const char **state_ return NULL; } strlcpy(this->name, name, sizeof(this->name)); + init_waitqueue_head(&this->wait_q); f = kzalloc(sizeof(fsm), order); if (f == NULL) { diff -urpN linux-2.6/drivers/s390/net/fsm.h linux-2.6-patched/drivers/s390/net/fsm.h --- linux-2.6/drivers/s390/net/fsm.h 2009-09-10 00:13:59.000000000 +0200 +++ linux-2.6-patched/drivers/s390/net/fsm.h 2009-11-12 14:59:32.000000000 +0100 @@ -66,6 +66,7 @@ typedef struct fsm_instance_t { char name[16]; void *userdata; int userint; + wait_queue_head_t wait_q; #if FSM_DEBUG_HISTORY int history_index; int history_size; @@ -197,6 +198,7 @@ fsm_newstate(fsm_instance *fi, int newst printk(KERN_DEBUG "fsm(%s): New state %s\n", fi->name, fi->f->state_names[newstate]); #endif + wake_up(&fi->wait_q); } /** -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html