Conform to Windows specification by checking for events before messages.
Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
---
drivers/staging/hv/vmbus_drv.c | 18 +++++++++---------
1 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/drivers/staging/hv/vmbus_drv.c b/drivers/staging/hv/vmbus_drv.c
index 5dcc8c3..4e07d4f 100644
--- a/drivers/staging/hv/vmbus_drv.c
+++ b/drivers/staging/hv/vmbus_drv.c
@@ -445,15 +445,6 @@ static irqreturn_t vmbus_isr(int irq, void *dev_id)
union hv_synic_event_flags *event;
bool handled = false;
- page_addr = hv_context.synic_message_page[cpu];
- msg = (struct hv_message *)page_addr + VMBUS_MESSAGE_SINT;
-
- /* Check if there are actual msgs to be process */
- if (msg->header.message_type != HVMSG_NONE) {
- handled = true;
- tasklet_schedule(&msg_dpc);
- }
-
page_addr = hv_context.synic_event_page[cpu];
event = (union hv_synic_event_flags *)page_addr + VMBUS_MESSAGE_SINT;
@@ -463,6 +454,15 @@ static irqreturn_t vmbus_isr(int irq, void *dev_id)
tasklet_schedule(&event_dpc);
}
+ page_addr = hv_context.synic_message_page[cpu];
+ msg = (struct hv_message *)page_addr + VMBUS_MESSAGE_SINT;
+
+ /* Check if there are actual msgs to be processed */
+ if (msg->header.message_type != HVMSG_NONE) {
+ handled = true;
+ tasklet_schedule(&msg_dpc);
+ }
+
if (handled)
return IRQ_HANDLED;
else
--
1.7.4.1
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