The uuid structure could be managed as a const in several places. Signed-off-by: Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx> --- 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); _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel