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

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Message-Id: <1358991765-22715-6-git-send-email-kys@microsoft.com>
Date:	Wed, 23 Jan 2013 17:42:45 -0800
From:	"K. Y. Srinivasan" <kys@...rosoft.com>
To:	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, olaf@...fle.de, apw@...onical.com,
	jasowang@...hat.com, davem@...emloft.net, jkosina@...e.cz,
	James.Bottomley@...senPartnership.com
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>
Subject: [PATCH 6/6] Drivers: hv: Execute shutdown in a thread context

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@...rosoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@...rosoft.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

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