Thread (78 messages) 78 messages, 6 authors, 2025-04-03
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[PATCH v36 31/31] ALSA: usb-audio: qcom: Notify USB audio devices on USB offload probing

From: Wesley Cheng <hidden>
Date: 2025-03-19 00:52:13
Also in: linux-arm-msm, linux-devicetree, linux-doc, linux-sound, linux-usb, lkml
Subsystem: sound, the rest · Maintainers: Jaroslav Kysela, Takashi Iwai, Linus Torvalds

If the vendor USB offload class driver is not ready/initialized before USB
SND discovers attached devices, utilize snd_usb_rediscover_devices() to
find all currently attached devices, so that the ASoC entities are notified
on available USB audio devices.

Signed-off-by: Wesley Cheng <redacted>
---
 sound/usb/qcom/qc_audio_offload.c | 2 ++
 1 file changed, 2 insertions(+)
diff --git a/sound/usb/qcom/qc_audio_offload.c b/sound/usb/qcom/qc_audio_offload.c
index 31624753284e..1a3688cc83d6 100644
--- a/sound/usb/qcom/qc_audio_offload.c
+++ b/sound/usb/qcom/qc_audio_offload.c
@@ -1966,6 +1966,8 @@ static int __init qc_usb_audio_offload_init(void)
 	if (ret < 0)
 		goto release_qmi;
 
+	snd_usb_rediscover_devices();
+
 	return 0;
 
 release_qmi:
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