Commit f52078cf authored by Dexuan Cui's avatar Dexuan Cui Committed by Greg Kroah-Hartman

Drivers: hv: vmbus: release relid on error in vmbus_process_offer()

We want to simplify vmbus_onoffer_rescind() by not invoking
hv_process_channel_removal(NULL, ...).
Signed-off-by: default avatarDexuan Cui <decui@microsoft.com>
Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 34c6801e
......@@ -177,19 +177,22 @@ static void percpu_channel_deq(void *arg)
}
void hv_process_channel_removal(struct vmbus_channel *channel, u32 relid)
static void vmbus_release_relid(u32 relid)
{
struct vmbus_channel_relid_released msg;
unsigned long flags;
struct vmbus_channel *primary_channel;
memset(&msg, 0, sizeof(struct vmbus_channel_relid_released));
msg.child_relid = relid;
msg.header.msgtype = CHANNELMSG_RELID_RELEASED;
vmbus_post_msg(&msg, sizeof(struct vmbus_channel_relid_released));
}
if (channel == NULL)
return;
void hv_process_channel_removal(struct vmbus_channel *channel, u32 relid)
{
unsigned long flags;
struct vmbus_channel *primary_channel;
vmbus_release_relid(relid);
BUG_ON(!channel->rescind);
......@@ -336,6 +339,8 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel)
return;
err_deq_chan:
vmbus_release_relid(newchannel->offermsg.child_relid);
spin_lock_irqsave(&vmbus_connection.channel_lock, flags);
list_del(&newchannel->listentry);
spin_unlock_irqrestore(&vmbus_connection.channel_lock, flags);
......@@ -587,7 +592,11 @@ static void vmbus_onoffer_rescind(struct vmbus_channel_message_header *hdr)
channel = relid2channel(rescind->child_relid);
if (channel == NULL) {
hv_process_channel_removal(NULL, rescind->child_relid);
/*
* This is very impossible, because in
* vmbus_process_offer(), we have already invoked
* vmbus_release_relid() on error.
*/
return;
}
......
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