[PATCH 3/8] Staging: hv: vmbus: Check for events before messages
From: "K. Y. Srinivasan" <kys@microsoft.com>
Date: 2011-08-15 21:52:18
Also in:
lkml
Subsystem:
staging subsystem, the rest · Maintainers:
Greg Kroah-Hartman, Linus Torvalds
Hyper-V requires that events be processed before processing messages. Make the necessary code adjustments. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> --- 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 1d4e878..536466b 100644
--- a/drivers/staging/hv/vmbus_drv.c
+++ b/drivers/staging/hv/vmbus_drv.c@@ -418,15 +418,6 @@ 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; - vmbus_on_msg_dpc(0); - } - page_addr = hv_context.synic_event_page[cpu]; event = (union hv_synic_event_flags *)page_addr + VMBUS_MESSAGE_SINT;
@@ -436,6 +427,15 @@ 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 process */ + if (msg->header.message_type != HVMSG_NONE) { + handled = true; + vmbus_on_msg_dpc(0); + } + if (handled) return IRQ_HANDLED; else
--
1.7.4.1