+/**
+ * comedi_alloc_spriv() - Allocate memory for the subdevice private data.
+ * @s: comedi_subdevice struct
+ * @size: size of the memory to allocate
+ *
+ * This also sets the subdevice runflags to allow the core to automatically
+ * free the private data during the detach.
+ */
+void *comedi_alloc_spriv(struct comedi_subdevice *s, size_t size)
+{
+ s->private = kzalloc(size, GFP_KERNEL);
+ if (s->private)
+ comedi_set_subdevice_runflags(s, ~0, SRF_FREE_SPRIV);
+ return s->private;
+}
+EXPORT_SYMBOL_GPL(comedi_alloc_spriv);
+