Commit 357e836a authored by Vitaly Kuznetsov's avatar Vitaly Kuznetsov Committed by Greg Kroah-Hartman

Drivers: hv: vmbus: decrease num_sc on subchannel removal

It is unlikely that that host will ask us to close only one subchannel for a
device but let's be consistent. Do both num_sc++ and num_sc-- with
channel->lock to be on the safe side.
Signed-off-by: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent fea844a2
...@@ -205,6 +205,7 @@ void hv_process_channel_removal(struct vmbus_channel *channel, u32 relid) ...@@ -205,6 +205,7 @@ void hv_process_channel_removal(struct vmbus_channel *channel, u32 relid)
primary_channel = channel->primary_channel; primary_channel = channel->primary_channel;
spin_lock_irqsave(&primary_channel->lock, flags); spin_lock_irqsave(&primary_channel->lock, flags);
list_del(&channel->sc_list); list_del(&channel->sc_list);
primary_channel->num_sc--;
spin_unlock_irqrestore(&primary_channel->lock, flags); spin_unlock_irqrestore(&primary_channel->lock, flags);
} }
free_channel(channel); free_channel(channel);
...@@ -265,8 +266,8 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel) ...@@ -265,8 +266,8 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel)
newchannel->primary_channel = channel; newchannel->primary_channel = channel;
spin_lock_irqsave(&channel->lock, flags); spin_lock_irqsave(&channel->lock, flags);
list_add_tail(&newchannel->sc_list, &channel->sc_list); list_add_tail(&newchannel->sc_list, &channel->sc_list);
spin_unlock_irqrestore(&channel->lock, flags);
channel->num_sc++; channel->num_sc++;
spin_unlock_irqrestore(&channel->lock, flags);
} else } else
goto err_free_chan; goto err_free_chan;
} }
......
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