From cf5b36b5d957abd718301dfd3ab03a63221bc145 Mon Sep 17 00:00:00 2001 From: Andrey Shvetsov Date: Fri, 12 May 2017 12:59:50 +0200 Subject: [PATCH] staging: most: net: use dormant state This replaces the call of wait_for_completion in case of an invalid MAC address in the function most_nd_open() with the dormant state of the network device. As a side effect, opening the network device cannot fail anymore. Signed-off-by: Andrey Shvetsov Signed-off-by: Christian Gromm Signed-off-by: Greg Kroah-Hartman --- drivers/staging/most/aim-network/networking.c | 31 ++++--------------- 1 file changed, 6 insertions(+), 25 deletions(-) diff --git a/drivers/staging/most/aim-network/networking.c b/drivers/staging/most/aim-network/networking.c index 004dd7b636cd..ce2942729ecf 100644 --- a/drivers/staging/most/aim-network/networking.c +++ b/drivers/staging/most/aim-network/networking.c @@ -69,7 +69,6 @@ struct net_dev_context { struct net_device *dev; struct net_dev_channel rx; struct net_dev_channel tx; - struct completion mac_compl; struct list_head list; }; @@ -180,7 +179,6 @@ static int most_nd_set_mac_address(struct net_device *dev, void *p) static int most_nd_open(struct net_device *dev) { struct net_dev_context *nd = dev->ml_priv; - long ret; netdev_info(dev, "open net device\n"); @@ -199,29 +197,13 @@ static int most_nd_open(struct net_device *dev) return -EBUSY; } - if (!is_valid_ether_addr(dev->dev_addr)) { - nd->iface->request_netinfo(nd->iface, nd->tx.ch_id); - ret = wait_for_completion_interruptible_timeout( - &nd->mac_compl, msecs_to_jiffies(5000)); - if (!ret) { - netdev_err(dev, "mac timeout\n"); - ret = -EBUSY; - goto err; - } - - if (ret < 0) { - netdev_warn(dev, "mac waiting interrupted\n"); - goto err; - } - } - + if (is_valid_ether_addr(dev->dev_addr)) + netif_dormant_off(dev); + else + netif_dormant_on(dev); netif_wake_queue(dev); + nd->iface->request_netinfo(nd->iface, nd->tx.ch_id); return 0; - -err: - most_stop_channel(nd->iface, nd->tx.ch_id, &aim); - most_stop_channel(nd->iface, nd->rx.ch_id, &aim); - return ret; } static int most_nd_stop(struct net_device *dev) @@ -337,7 +319,6 @@ static int aim_probe_channel(struct most_interface *iface, int channel_idx, if (!nd) return -ENOMEM; - init_completion(&nd->mac_compl); nd->iface = iface; spin_lock_irqsave(&list_lock, flags); @@ -569,7 +550,7 @@ void most_deliver_netinfo(struct most_interface *iface, netdev_info(dev, "set mac %02x-%02x-%02x-%02x-%02x-%02x\n", m[0], m[1], m[2], m[3], m[4], m[5]); ether_addr_copy(dev->dev_addr, m); - complete(&nd->mac_compl); + netif_dormant_off(dev); } else if (!ether_addr_equal(dev->dev_addr, m)) { netdev_warn(dev, "reject mac %02x-%02x-%02x-%02x-%02x-%02x\n", m[0], m[1], m[2], m[3], m[4], m[5]); -- 2.45.2