linux-kernel - [PATCH 5.4 106/168] usb: gadget: f_uac1: stop playback on function disable

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Date:   Mon, 15 Mar 2021 14:55:38 +0100
From:   gregkh@...uxfoundation.org
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Ruslan Bilovol <ruslan.bilovol@...il.com>
Subject: [PATCH 5.4 106/168] usb: gadget: f_uac1: stop playback on function disable

From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

From: Ruslan Bilovol <ruslan.bilovol@...il.com>

commit cc2ac63d4cf72104e0e7f58bb846121f0f51bb19 upstream.

There is missing playback stop/cleanup in case of
gadget's ->disable callback that happens on
events like USB host resetting or gadget disconnection

Fixes: 0591bc236015 ("usb: gadget: add f_uac1 variant based on a new u_audio api")
Cc: <stable@...r.kernel.org> # 4.13+
Signed-off-by: Ruslan Bilovol <ruslan.bilovol@...il.com>
Link: https://lore.kernel.org/r/1614599375-8803-3-git-send-email-ruslan.bilovol@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/usb/gadget/function/f_uac1.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/usb/gadget/function/f_uac1.c
+++ b/drivers/usb/gadget/function/f_uac1.c
@@ -499,6 +499,7 @@ static void f_audio_disable(struct usb_f
 	uac1->as_out_alt = 0;
 	uac1->as_in_alt = 0;
 
+	u_audio_stop_playback(&uac1->g_audio);
 	u_audio_stop_capture(&uac1->g_audio);
 }