[PATCH 6/6] Drivers: hv: Execute shutdown in a thread context

K. Y. Srinivasan
2013-01-24T01:16:13Z

Execute the shutdown code in a thread context. With recent changes made to the
shutdown code, shutdown code cannot be invoked from an interrupt context.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
---
drivers/hv/hv_util.c | 12 +++++++++++-
1 files changed, 11 insertions(+), 1 deletions(-)

diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c
index 8b7868a..aceb67f 100644
--- a/drivers/hv/hv_util.c
+++ b/drivers/hv/hv_util.c
@@ -49,6 +49,16 @@ static struct hv_util_service util_kvp = {
.util_deinit = hv_kvp_deinit,
};

+static void perform_shutdown(struct work_struct *dummy)
+{
+ orderly_poweroff(true);
+}
+
+/*
+ * Perform the shutdown operation in a thread context.
+ */
+static DECLARE_WORK(shutdown_work, perform_shutdown);
+
static void shutdown_onchannelcallback(void *context)
{
struct vmbus_channel *channel = context;
@@ -106,7 +116,7 @@ static void shutdown_onchannelcallback(void *context)
}

if (execute_shutdown == true)
- orderly_poweroff(true);
+ schedule_work(&shutdown_work);
}

/*
--
1.7.4.1