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hv_sock: Add the support of hibernation

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Add the necessary dummy callbacks for hibernation.

Signed-off-by: Dexuan Cui <decui@microsoft.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dexuan Cui 2019-09-25 21:34:13 +00:00 committed by Sasha Levin
parent 1ecf302021
commit 2194c2eb67
1 changed files with 20 additions and 0 deletions
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20
net/vmw_vsock/hyperv_transport.c
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@ -938,6 +938,24 @@ static int hvs_remove(struct hv_device *hdev)
return 0; return 0;
} }
/* hv_sock connections can not persist across hibernation, and all the hv_sock
* channels are forced to be rescinded before hibernation: see
* vmbus_bus_suspend(). Here the dummy hvs_suspend() and hvs_resume()
* are only needed because hibernation requires that every vmbus device's
* driver should have a .suspend and .resume callback: see vmbus_suspend().
*/
static int hvs_suspend(struct hv_device *hv_dev)
{
/* Dummy */
return 0;
}
static int hvs_resume(struct hv_device *dev)
{
/* Dummy */
return 0;
}
/* This isn't really used. See vmbus_match() and vmbus_probe() */ /* This isn't really used. See vmbus_match() and vmbus_probe() */
static const struct hv_vmbus_device_id id_table[] = { static const struct hv_vmbus_device_id id_table[] = {
{}, {},
@ -949,6 +967,8 @@ static struct hv_driver hvs_drv = {
.id_table = id_table, .id_table = id_table,
.probe = hvs_probe, .probe = hvs_probe,
.remove = hvs_remove, .remove = hvs_remove,
.suspend = hvs_suspend,
.resume = hvs_resume,
}; };
static int __init hvs_init(void) static int __init hvs_init(void)