From: John Starks <jostarks@xxxxxxxxxxxxx>
When resuming from hibernation, log any channels that were present
before hibernation but now are gone.
Signed-off-by: John Starks <jostarks@xxxxxxxxxxxxx>
Co-developed-by: Naman Jain <namjain@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Naman Jain <namjain@xxxxxxxxxxxxxxxxxxx>
---
drivers/hv/vmbus_drv.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index bd3fc41dc06b..1f56d138210e 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -2462,6 +2462,7 @@ static int vmbus_bus_suspend(struct device *dev)
static int vmbus_bus_resume(struct device *dev)
{
+ struct vmbus_channel *channel;
struct vmbus_channel_msginfo *msginfo;
size_t msgsize;
int ret;
@@ -2494,6 +2495,21 @@ static int vmbus_bus_resume(struct device *dev)
vmbus_request_offers();
+ mutex_lock(&vmbus_connection.channel_mutex);
+ list_for_each_entry(channel, &vmbus_connection.chn_list, listentry) {
+ if (channel->offermsg.child_relid != INVALID_RELID)
+ continue;
+
+ /* hvsock channels are not expected to be present. */
+ if (is_hvsock_channel(channel))
+ continue;
+
+ pr_err("channel %pUl/%pUl not present after resume.\n",
+ &channel->offermsg.offer.if_type,
+ &channel->offermsg.offer.if_instance);
+ }
+ mutex_unlock(&vmbus_connection.channel_mutex);
+
/* Reset the event for the next suspend. */
reinit_completion(&vmbus_connection.ready_for_suspend_event);
--
2.34.1
