linux-kernel - [PATCH net-next] hyper-v: make uuid

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Date:	Tue, 3 Jun 2014 08:38:15 -0700
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>
Cc:	devel@...uxdriverproject.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: [PATCH net-next] hyper-v: make uuid_le const

The uuid structure could be managed as a const in several places.

Signed-off-by: Stephen Hemminger <stephen@...workplumber.org>

---
Patch against net-next because that is where most recent
hyper-v related changes are.


--- a/drivers/hv/channel_mgmt.c	2014-02-12 08:21:54.627887619 -0800
+++ b/drivers/hv/channel_mgmt.c	2014-06-03 08:08:47.030901345 -0700
@@ -365,7 +365,7 @@ static u32  next_vp;
  * performance critical channels (IDE, SCSI and Network) will be uniformly
  * distributed across all available CPUs.
  */
-static u32 get_vp_index(uuid_le *type_guid)
+static u32 get_vp_index(const uuid_le *type_guid)
 {
 	u32 cur_cpu;
 	int i;
--- a/drivers/hv/vmbus_drv.c	2014-04-07 11:21:05.704486433 -0700
+++ b/drivers/hv/vmbus_drv.c	2014-06-03 08:11:14.771854064 -0700
@@ -435,7 +435,7 @@ static int vmbus_uevent(struct device *d
 	return ret;
 }
 
-static uuid_le null_guid;
+static const uuid_le null_guid;
 
 static inline bool is_null_guid(const __u8 *guid)
 {
@@ -450,7 +450,7 @@ static inline bool is_null_guid(const __
  */
 static const struct hv_vmbus_device_id *hv_vmbus_get_id(
 					const struct hv_vmbus_device_id *id,
-					__u8 *guid)
+					const __u8 *guid)
 {
 	for (; !is_null_guid(id->guid); id++)
 		if (!memcmp(&id->guid, guid, sizeof(uuid_le)))
@@ -779,9 +779,9 @@ EXPORT_SYMBOL_GPL(vmbus_driver_unregiste
  * vmbus_device_create - Creates and registers a new child device
  * on the vmbus.
  */
-struct hv_device *vmbus_device_create(uuid_le *type,
-					    uuid_le *instance,
-					    struct vmbus_channel *channel)
+struct hv_device *vmbus_device_create(const uuid_le *type,
+				      const uuid_le *instance,
+				      struct vmbus_channel *channel)
 {
 	struct hv_device *child_device_obj;
 
--- a/drivers/hv/hyperv_vmbus.h	2014-04-07 11:21:05.704486433 -0700
+++ b/drivers/hv/hyperv_vmbus.h	2014-06-03 08:27:12.618223800 -0700
@@ -644,9 +644,9 @@ extern struct vmbus_connection vmbus_con
 
 /* General vmbus interface */
 
-struct hv_device *vmbus_device_create(uuid_le *type,
-					 uuid_le *instance,
-					 struct vmbus_channel *channel);
+struct hv_device *vmbus_device_create(const uuid_le *type,
+				      const uuid_le *instance,
+				      struct vmbus_channel *channel);
 
 int vmbus_device_register(struct hv_device *child_device_obj);
 void vmbus_device_unregister(struct hv_device *device_obj);
--
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