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Commit 17efbee8 authored by Andrey Smetanin's avatar Andrey Smetanin Committed by Greg Kroah-Hartman
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drivers/hv: cleanup synic msrs if vmbus connect failed 



Before vmbus_connect() synic is setup per vcpu - this means
hypervisor receives writes at synic msr's and probably allocate
hypervisor resources per synic setup.

If vmbus_connect() failed for some reason it's neccessary to cleanup
synic setup by call hv_synic_cleanup() at each vcpu to get a chance
to free allocated resources by hypervisor per synic.

This patch does appropriate cleanup in case of vmbus_connect() failure.

Signed-off-by: default avatarAndrey Smetanin <asmetanin@virtuozzo.com>
Signed-off-by: default avatarDenis V. Lunev <den@openvz.org>
Reviewed-by: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
CC: "K. Y. Srinivasan" <kys@microsoft.com>
CC: Haiyang Zhang <haiyangz@microsoft.com>
CC: Vitaly 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 b0035964

drivers/hv/vmbus_drv.c

+3 −1
Original line number Diff line number Diff line
@@ -867,7 +867,7 @@ static int vmbus_bus_init(int irq) 
	on_each_cpu(hv_synic_init, NULL, 1);

	ret = vmbus_connect();

	if (ret)

		goto err_alloc;

		goto err_connect;



	if (vmbus_proto_version > VERSION_WIN7)

		cpu_hotplug_disable();
@@ -885,6 +885,8 @@ static int vmbus_bus_init(int irq) 


	return 0;



err_connect:

	on_each_cpu(hv_synic_cleanup, NULL, 1);

err_alloc:

	hv_synic_free();

	hv_remove_vmbus_irq();