isci: kill a callback cast

Callbacks are already type unsafe, obfuscating things further by casting the
callback routine is less safe because now function argument number changes
will not be caught by the compiler.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

drivers/scsi/isci/core/scic_sds_remote_device.c

@@ -583,19 +583,20 @@ void scic_sds_remote_device_start_request(
  * serves as a callback when RNC gets resumed during a task management
  * sequence. none
  */
-void scic_sds_remote_device_continue_request(
-	struct scic_sds_remote_device *this_device)
+void scic_sds_remote_device_continue_request(void *dev)
 {
+	struct scic_sds_remote_device *sci_dev = dev;
+	struct scic_sds_request *sci_req = sci_dev->working_request;
+
 	/* we need to check if this request is still valid to continue. */
-	if (this_device->working_request != NULL) {
-		struct scic_sds_request *this_request = this_device->working_request;
-		struct scic_sds_controller *scic = this_request->owning_controller;
+	if (sci_req) {
+		struct scic_sds_controller *scic = sci_req->owning_controller;
 		u32 state = scic->parent.state_machine.current_state_id;
 		sci_base_controller_request_handler_t continue_io;
 
 		continue_io = scic_sds_controller_state_handler_table[state].base.continue_io;
-		continue_io(&scic->parent, &this_request->target_device->parent,
-			    &this_request->parent);
+		continue_io(&scic->parent, &sci_req->target_device->parent,
+			    &sci_req->parent);
 	}
 }
 

drivers/scsi/isci/core/scic_sds_remote_device.h

@@ -509,8 +509,7 @@ void scic_sds_remote_device_start_request(
 	struct scic_sds_request *the_request,
 	enum sci_status status);
 
-void scic_sds_remote_device_continue_request(
-	struct scic_sds_remote_device *this_device);
+void scic_sds_remote_device_continue_request(void *sci_dev);
 
 enum sci_status scic_sds_remote_device_default_start_handler(
 	struct sci_base_remote_device *this_device);

drivers/scsi/isci/core/scic_sds_stp_remote_device.c

@@ -188,7 +188,6 @@ static enum sci_status scic_sds_stp_remote_device_ready_substate_start_request_h
 
 			scic_sds_remote_node_context_resume(
 				this_device->rnc,
-				(scics_sds_remote_node_context_callback)
 				scic_sds_remote_device_continue_request,
 				this_device);
 		}