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

Greg Kroah-Hartman
2022-10-03T07:28:17Z

From: Takashi Iwai <tiwai@suse.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@suse.de>
Stable-dep-of: ead3d3c5b54f ("ALSA: hda: Fix hang at HD-audio codec unbinding due to refcount saturation")
Signed-off-by: Sasha Levin <sashal@kernel.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