linux-kernel - [PATCH 010/117] Staging: hv: util: Make hv

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Message-Id: <1310752065-27895-10-git-send-email-kys@microsoft.com>
Date:	Fri, 15 Jul 2011 10:45:58 -0700
From:	"K. Y. Srinivasan" <kys@...rosoft.com>
To:	gregkh@...e.de, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, virtualization@...ts.osdl.org
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>
Subject: [PATCH 010/117] Staging: hv: util: Make hv_utils a vmbus device driver

Make hv_utils a vmbus device driver.

Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
---
 drivers/staging/hv/hv_util.c |   28 +++++++++++++++++++++++++++-
 1 files changed, 27 insertions(+), 1 deletions(-)

diff --git a/drivers/staging/hv/hv_util.c b/drivers/staging/hv/hv_util.c
index c164b54..e72bfe0 100644
--- a/drivers/staging/hv/hv_util.c
+++ b/drivers/staging/hv/hv_util.c
@@ -36,6 +36,8 @@ static u8 *shut_txf_buf;
 static u8 *time_txf_buf;
 static u8 *hbeat_txf_buf;
 
+static const char *driver_name = "hv_util";
+
 static void shutdown_onchannelcallback(void *context)
 {
 	struct vmbus_channel *channel = context;
@@ -210,6 +212,27 @@ static void heartbeat_onchannelcallback(void *context)
 	}
 }
 
+/*
+ * The devices managed by the util driver don't need any additional
+ * setup.
+ */
+static int util_probe(struct hv_device *dev)
+{
+	return 0;
+}
+
+static int util_remove(struct hv_device *dev)
+{
+	return 0;
+}
+
+
+/* The one and only one */
+static  struct hv_driver util_drv = {
+	.probe =  util_probe,
+	.remove =  util_remove,
+};
+
 static const struct pci_device_id __initconst
 hv_utils_pci_table[] __maybe_unused = {
 	{ PCI_DEVICE(0x1414, 0x5353) }, /* Hyper-V emulated VGA controller */
@@ -264,7 +287,9 @@ static int __init init_hyperv_utils(void)
 
 	hv_cb_utils[HV_KVP_MSG].callback = &hv_kvp_onchannelcallback;
 
-	return 0;
+	util_drv.driver.name = driver_name;
+
+	return vmbus_child_driver_register(&util_drv.driver);
 }
 
 static void exit_hyperv_utils(void)
@@ -296,6 +321,7 @@ static void exit_hyperv_utils(void)
 	kfree(shut_txf_buf);
 	kfree(time_txf_buf);
 	kfree(hbeat_txf_buf);
+	vmbus_child_driver_unregister(&util_drv.driver);
 }
 
 module_init(init_hyperv_utils);
-- 
1.7.4.1

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