Problems in structure pointer

[kalakodumuri]

Hi,
This is sasikala. I have small doubt. I need to pass the value of instanceRef_p
to the function.
subsReturnData = (SubscriberReturnData*)
sig_p->addSubRsp_r.clientId_t.instanceRef_p;
where as the structures are defined as follows.
typedef struct
{
U32 instanceId;
void *instanceRef_p;
U32 piuId;
Cello_ClassName className;
Cello_ProcessName processName;
} Cello_ObjectId;
typedef struct
{
PROCESS subscriberPid;
Cello_ObjectId subscriberObjectId;
Cello_ObjectId spmObjectId;
U32 attributeId;
void *subscriberData;
} SubscriberReturnData;

I need to pass the value of InstanceRef_p which has return type void. How can I do it.

[Banfa]

void SomeFunction(void *pInput)
{
    // Code accessing pInput here
}