This method in the sound API is optional since some drivers can do this
when probing or as part of SoC init. Mark it as such.
Signed-off-by: Simon Glass <s...@chromium.org>
---
drivers/sound/sound-uclass.c | 2 +-
include/sound.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/sound/sound-uclass.c b/drivers/sound/sound-uclass.c
index 2b83626889..067660623b 100644
--- a/drivers/sound/sound-uclass.c
+++ b/drivers/sound/sound-uclass.c
@@ -16,7 +16,7 @@ int sound_setup(struct udevice *dev)
struct sound_ops *ops = sound_get_ops(dev);
if (!ops->setup)
- return -ENOSYS;
+ return 0;
return ops->setup(dev);
}
diff --git a/include/sound.h b/include/sound.h
index b7959cc260..7d528c479e 100644
--- a/include/sound.h
+++ b/include/sound.h
@@ -54,7 +54,7 @@ void sound_create_square_wave(uint sample_rate, unsigned
short *data, int size,
/* Operations for sound */
struct sound_ops {
/**
- * setup() - Set up to play a sound
+ * setup() - Set up to play a sound (optional)
*/
int (*setup)(struct udevice *dev);
--
2.20.1.321.g9e740568ce-goog
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