dm: core: Add note about device_probe idempotence

device_probe returns early when the device is already activated.
Add a note to the documentation that it can be used on already activated
devices.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>

diff --git a/include/dm/device-internal.h b/include/dm/device-internal.h
index 94844d3..f31c470 100644 (file)
--- a/include/dm/device-internal.h
+++ b/include/dm/device-internal.h
@@ -184,8 +184,8 @@ int device_of_to_plat(struct udevice *dev);
 /**
  * device_probe() - Probe a device, activating it
  *
- * Activate a device so that it is ready for use. All its parents are probed
- * first.
+ * Activate a device (if not yet activated) so that it is ready for use.
+ * All its parents are probed first.
  *
  * @dev: Pointer to device to probe
  * Return: 0 if OK, -ve on error