linux-kernel - [PATCH 5.15 01/83] ALSA: hda: Do disconnect jacks at codec unbind

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Date:   Mon,  3 Oct 2022 09:10:26 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Takashi Iwai <tiwai@...e.de>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 01/83] ALSA: hda: Do disconnect jacks at codec unbind

From: Takashi Iwai <tiwai@...e.de>

[ Upstream commit 37c4fd0db7c961145d9d1909ecab386fdf703c26 ]

The HD-audio codec driver remove may happen also at dynamically
unbinding during operation, hence it needs manual triggers of
snd_device_disconnect() calls, while it's missing for the jack objects
that are associated with the codec.

This patch adds the manual disconnection call for jacks when the
remove happens without card->shutdown (i.e. not under the full
removal).

Link: https://lore.kernel.org/r/20211117133040.20272-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Stable-dep-of: ead3d3c5b54f ("ALSA: hda: Fix hang at HD-audio codec unbinding due to refcount saturation")
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/pci/hda/hda_bind.c |  2 ++
 sound/pci/hda/hda_jack.c | 11 +++++++++++
 sound/pci/hda/hda_jack.h |  1 +
 3 files changed, 14 insertions(+)

diff --git a/sound/pci/hda/hda_bind.c b/sound/pci/hda/hda_bind.c
index 7153bd53e189..c572fb5886d5 100644
--- a/sound/pci/hda/hda_bind.c
+++ b/sound/pci/hda/hda_bind.c
@@ -14,6 +14,7 @@
 #include <sound/core.h>
 #include <sound/hda_codec.h>
 #include "hda_local.h"
+#include "hda_jack.h"
 
 /*
  * find a matching codec id
@@ -158,6 +159,7 @@ static int hda_codec_driver_remove(struct device *dev)
 
 	refcount_dec(&codec->pcm_ref);
 	snd_hda_codec_disconnect_pcms(codec);
+	snd_hda_jack_tbl_disconnect(codec);
 	wait_event(codec->remove_sleep, !refcount_read(&codec->pcm_ref));
 	snd_power_sync_ref(codec->bus->card);
 
diff --git a/sound/pci/hda/hda_jack.c b/sound/pci/hda/hda_jack.c
index f29975e3e98d..7d7786df60ea 100644
--- a/sound/pci/hda/hda_jack.c
+++ b/sound/pci/hda/hda_jack.c
@@ -158,6 +158,17 @@ snd_hda_jack_tbl_new(struct hda_codec *codec, hda_nid_t nid, int dev_id)
 	return jack;
 }
 
+void snd_hda_jack_tbl_disconnect(struct hda_codec *codec)
+{
+	struct hda_jack_tbl *jack = codec->jacktbl.list;
+	int i;
+
+	for (i = 0; i < codec->jacktbl.used; i++, jack++) {
+		if (!codec->bus->shutdown && jack->jack)
+			snd_device_disconnect(codec->card, jack->jack);
+	}
+}
+
 void snd_hda_jack_tbl_clear(struct hda_codec *codec)
 {
 	struct hda_jack_tbl *jack = codec->jacktbl.list;
diff --git a/sound/pci/hda/hda_jack.h b/sound/pci/hda/hda_jack.h
index 2abf7aac243a..ff7d289c034b 100644
--- a/sound/pci/hda/hda_jack.h
+++ b/sound/pci/hda/hda_jack.h
@@ -69,6 +69,7 @@ struct hda_jack_tbl *
 snd_hda_jack_tbl_get_from_tag(struct hda_codec *codec,
 			      unsigned char tag, int dev_id);
 
+void snd_hda_jack_tbl_disconnect(struct hda_codec *codec);
 void snd_hda_jack_tbl_clear(struct hda_codec *codec);
 
 void snd_hda_jack_set_dirty_all(struct hda_codec *codec);
-- 
2.35.1