ALSA: jack: Update documention to reflect other userspace interfaces
Since this is a generic API which should support any userspace interface
for reporting jacks update the documentation a little to make that a bit
clearer.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/core/jack.c b/sound/core/jack.c
index 471e1e3..a06b165 100644
--- a/sound/core/jack.c
+++ b/sound/core/jack.c
@@ -155,7 +155,7 @@
* @jack: The jack to configure
* @parent: The device to set as parent for the jack.
*
- * Set the parent for the jack input device in the device tree. This
+ * Set the parent for the jack devices in the device tree. This
* function is only valid prior to registration of the jack. If no
* parent is configured then the parent device will be the sound card.
*/
@@ -179,6 +179,9 @@
* mapping is provided but keys are enabled in the jack type then
* BTN_n numeric buttons will be reported.
*
+ * If jacks are not reporting via the input API this call will have no
+ * effect.
+ *
* Note that this is intended to be use by simple devices with small
* numbers of keys that can be reported. It is also possible to
* access the input device directly - devices with complex input