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-rw-r--r--drivers/hv/channel_mgmt.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 417a95e5094d..af7832e13167 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -750,7 +750,7 @@ static void vmbus_wait_for_unload(void)
void *page_addr;
struct hv_message *msg;
struct vmbus_channel_message_header *hdr;
- u32 message_type;
+ u32 message_type, i;
/*
* CHANNELMSG_UNLOAD_RESPONSE is always delivered to the CPU which was
@@ -760,8 +760,11 @@ static void vmbus_wait_for_unload(void)
* functional and vmbus_unload_response() will complete
* vmbus_connection.unload_event. If not, the last thing we can do is
* read message pages for all CPUs directly.
+ *
+ * Wait no more than 10 seconds so that the panic path can't get
+ * hung forever in case the response message isn't seen.
*/
- while (1) {
+ for (i = 0; i < 1000; i++) {
if (completion_done(&vmbus_connection.unload_event))
break;