drm/amdkfd: remove redundant kfd_event_waiter.input_index

This always identical with the index of the event_waiter in the array.
No need to store it in the waiter record.

Signed-off-by: Felix Kuehling <[e-mail]>
Reviewed-by: Oded Gabbay <[e-mail]>
Signed-off-by: Oded Gabbay <[e-mail]>

drivers/gpu/drm/amd/amdkfd/kfd_events.c

···
 
 	/* Event */
 	struct kfd_event *event;
-	uint32_t input_index;
 };
 
 /*
···
 
 static int init_event_waiter_get_status(struct kfd_process *p,
 		struct kfd_event_waiter *waiter,
-		uint32_t event_id,
-		uint32_t input_index)
+		uint32_t event_id)
 {
 	struct kfd_event *ev = lookup_event_by_id(p, event_id);
 
···
 		return -EINVAL;
 
 	waiter->event = ev;
-	waiter->input_index = input_index;
 	waiter->activated = ev->signaled;
 	ev->signaled = ev->signaled && !ev->auto_reset;
 
···
 		waiter = &event_waiters[i];
 		event = waiter->event;
 		if (waiter->activated && event->type == KFD_EVENT_TYPE_MEMORY) {
-			dst = &data[waiter->input_index].memory_exception_data;
+			dst = &data[i].memory_exception_data;
 			src = &event->memory_exception_data;
 			if (copy_to_user(dst, src,
 				sizeof(struct kfd_hsa_memory_exception_data)))
···
 		}
 
 		ret = init_event_waiter_get_status(p, &event_waiters[i],
-				event_data.event_id, i);
+				event_data.event_id);
 		if (ret)
 			goto out_unlock;
 	}