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authorStephen Hemminger <stephen@networkplumber.org>2017-09-06 13:53:06 -0700
committerDavid S. Miller <davem@davemloft.net>2017-09-11 14:21:30 -0700
commit8f2bb1de73344dbedd4195016b782bee7bf3598f (patch)
tree8bbc1c2d115869ad53882621fb220adb5e917023 /drivers
parent8195b1396ec86dddbba443c74b2188b423556c74 (diff)
hv_netvsc: avoid unnecessary wakeups on subchannel creation
Only need to wakeup the initiator after all sub-channels are opened. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/hyperv/rndis_filter.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c
index 731bc7cc6f43..065b204d8e17 100644
--- a/drivers/net/hyperv/rndis_filter.c
+++ b/drivers/net/hyperv/rndis_filter.c
@@ -1048,8 +1048,8 @@ static void netvsc_sc_open(struct vmbus_channel *new_sc)
else
netdev_notice(ndev, "sub channel open failed: %d\n", ret);
- atomic_inc(&nvscdev->open_chn);
- wake_up(&nvscdev->subchan_open);
+ if (atomic_inc_return(&nvscdev->open_chn) == nvscdev->num_chn)
+ wake_up(&nvscdev->subchan_open);
}
/* Open sub-channels after completing the handling of the device probe.