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Drivers: hv: vmbus: decrease num_sc on subchannel removal

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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: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vitaly Kuznetsov 2015-05-06 17:47:44 -07:00 committed by Greg Kroah-Hartman
parent fea844a2b0
commit 357e836a60
1 changed files with 2 additions and 1 deletions
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3
drivers/hv/channel_mgmt.c
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@ -205,6 +205,7 @@ void hv_process_channel_removal(struct vmbus_channel *channel, u32 relid)
primary_channel = channel->primary_channel;
spin_lock_irqsave(&primary_channel->lock, flags);
list_del(&channel->sc_list);
primary_channel->num_sc--;
spin_unlock_irqrestore(&primary_channel->lock, flags);
}
free_channel(channel);
@ -265,8 +266,8 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel)
newchannel->primary_channel = channel;
spin_lock_irqsave(&channel->lock, flags);
list_add_tail(&newchannel->sc_list, &channel->sc_list);
spin_unlock_irqrestore(&channel->lock, flags);
channel->num_sc++;
spin_unlock_irqrestore(&channel->lock, flags);
} else
goto err_free_chan;
}