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authorCássio Gabriel <cassiogabrielcontato@gmail.com>2026-05-11 01:29:34 -0300
committerTakashi Iwai <tiwai@suse.de>2026-05-15 17:54:47 +0200
commitb65020d5398f499c09498c9786dba6d67ae57664 (patch)
treee6cf5f104e5a3522b2a755af15cfe51cb22c7fd8 /sound
parentc77a6cbb36ff8cbc1f084d94f8dcda5250935271 (diff)
downloadlinux-next-history-b65020d5398f499c09498c9786dba6d67ae57664.tar.gz
ALSA: hda/cs35l41: Fix firmware load work teardown
cs35l41_hda creates ALSA controls whose private data points at the cs35l41_hda object. The firmware load control can also queue fw_load_work. Those controls are not removed on component unbind, and device remove only cancels fw_load_work through cs35l41_remove_dsp(). That helper is skipped when halo_initialized is false. With firmware_autostart disabled, a firmware load can be requested before the DSP has been initialized. If the component or device is removed before the queued work runs, the worker can run after teardown and dereference driver state that is no longer valid. Track the created controls and remove them on unbind so no new control callback can reach the driver data or queue more work. Then cancel fw_load_work to drain any request that was already queued. Also cancel the work unconditionally during device remove before runtime PM teardown. Fixes: 47ceabd99a28 ("ALSA: hda: cs35l41: Support Firmware switching and reloading") Fixes: 4c870513fbb0 ("ALSA: hda: cs35l41: Add read-only ALSA control for forced mute") Cc: stable@vger.kernel.org Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com> Reviewed-by: Stefan Binding <sbinding@opensource.cirrus.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://patch.msgid.link/20260511-alsa-hda-cs35l41-fw-work-teardown-v1-1-1184e9bc4f25@gmail.com
Diffstat (limited to 'sound')
-rw-r--r--sound/hda/codecs/side-codecs/cs35l41_hda.c77
-rw-r--r--sound/hda/codecs/side-codecs/cs35l41_hda.h5
2 files changed, 60 insertions, 22 deletions
diff --git a/sound/hda/codecs/side-codecs/cs35l41_hda.c b/sound/hda/codecs/side-codecs/cs35l41_hda.c
index acfccc848f82d..64a5bd895fd1e 100644
--- a/sound/hda/codecs/side-codecs/cs35l41_hda.c
+++ b/sound/hda/codecs/side-codecs/cs35l41_hda.c
@@ -1325,6 +1325,43 @@ static int cs35l41_fw_type_ctl_info(struct snd_kcontrol *kcontrol, struct snd_ct
return snd_ctl_enum_info(uinfo, 1, ARRAY_SIZE(cs35l41_hda_fw_ids), cs35l41_hda_fw_ids);
}
+static void cs35l41_remove_controls(struct cs35l41_hda *cs35l41)
+{
+ if (!cs35l41->codec)
+ return;
+
+ snd_ctl_remove(cs35l41->codec->card, cs35l41->mute_override_ctl);
+ cs35l41->mute_override_ctl = NULL;
+
+ snd_ctl_remove(cs35l41->codec->card, cs35l41->fw_load_ctl);
+ cs35l41->fw_load_ctl = NULL;
+
+ snd_ctl_remove(cs35l41->codec->card, cs35l41->fw_type_ctl);
+ cs35l41->fw_type_ctl = NULL;
+}
+
+static int cs35l41_add_control(struct cs35l41_hda *cs35l41,
+ struct snd_kcontrol_new *ctl,
+ struct snd_kcontrol **kctl)
+{
+ int ret;
+
+ *kctl = snd_ctl_new1(ctl, cs35l41);
+ if (!*kctl)
+ return -ENOMEM;
+
+ ret = snd_ctl_add(cs35l41->codec->card, *kctl);
+ if (ret) {
+ dev_err(cs35l41->dev, "Failed to add KControl %s = %d\n", ctl->name, ret);
+ *kctl = NULL;
+ return ret;
+ }
+
+ dev_dbg(cs35l41->dev, "Added Control %s\n", ctl->name);
+
+ return 0;
+}
+
static int cs35l41_create_controls(struct cs35l41_hda *cs35l41)
{
char fw_type_ctl_name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
@@ -1360,32 +1397,23 @@ static int cs35l41_create_controls(struct cs35l41_hda *cs35l41)
scnprintf(mute_override_ctl_name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN, "%s Forced Mute Status",
cs35l41->amp_name);
- ret = snd_ctl_add(cs35l41->codec->card, snd_ctl_new1(&fw_type_ctl, cs35l41));
- if (ret) {
- dev_err(cs35l41->dev, "Failed to add KControl %s = %d\n", fw_type_ctl.name, ret);
- return ret;
- }
-
- dev_dbg(cs35l41->dev, "Added Control %s\n", fw_type_ctl.name);
-
- ret = snd_ctl_add(cs35l41->codec->card, snd_ctl_new1(&fw_load_ctl, cs35l41));
- if (ret) {
- dev_err(cs35l41->dev, "Failed to add KControl %s = %d\n", fw_load_ctl.name, ret);
- return ret;
- }
-
- dev_dbg(cs35l41->dev, "Added Control %s\n", fw_load_ctl.name);
+ ret = cs35l41_add_control(cs35l41, &fw_type_ctl, &cs35l41->fw_type_ctl);
+ if (ret)
+ goto err;
- ret = snd_ctl_add(cs35l41->codec->card, snd_ctl_new1(&mute_override_ctl, cs35l41));
- if (ret) {
- dev_err(cs35l41->dev, "Failed to add KControl %s = %d\n", mute_override_ctl.name,
- ret);
- return ret;
- }
+ ret = cs35l41_add_control(cs35l41, &fw_load_ctl, &cs35l41->fw_load_ctl);
+ if (ret)
+ goto err;
- dev_dbg(cs35l41->dev, "Added Control %s\n", mute_override_ctl.name);
+ ret = cs35l41_add_control(cs35l41, &mute_override_ctl, &cs35l41->mute_override_ctl);
+ if (ret)
+ goto err;
return 0;
+
+err:
+ cs35l41_remove_controls(cs35l41);
+ return ret;
}
static bool cs35l41_dsm_supported(acpi_handle handle, unsigned int commands)
@@ -1522,6 +1550,10 @@ static void cs35l41_hda_unbind(struct device *dev, struct device *master, void *
device_link_remove(&cs35l41->codec->core.dev, cs35l41->dev);
unlock_system_sleep(sleep_flags);
memset(comp, 0, sizeof(*comp));
+
+ cs35l41_remove_controls(cs35l41);
+ cancel_work_sync(&cs35l41->fw_load_work);
+ cs35l41->codec = NULL;
}
}
@@ -2060,6 +2092,7 @@ void cs35l41_hda_remove(struct device *dev)
struct cs35l41_hda *cs35l41 = dev_get_drvdata(dev);
component_del(cs35l41->dev, &cs35l41_hda_comp_ops);
+ cancel_work_sync(&cs35l41->fw_load_work);
pm_runtime_get_sync(cs35l41->dev);
pm_runtime_dont_use_autosuspend(cs35l41->dev);
diff --git a/sound/hda/codecs/side-codecs/cs35l41_hda.h b/sound/hda/codecs/side-codecs/cs35l41_hda.h
index 7d003c598e93e..56ec07c0bb745 100644
--- a/sound/hda/codecs/side-codecs/cs35l41_hda.h
+++ b/sound/hda/codecs/side-codecs/cs35l41_hda.h
@@ -57,6 +57,8 @@ enum control_bus {
SPI
};
+struct snd_kcontrol;
+
struct cs35l41_hda {
struct device *dev;
struct regmap *regmap;
@@ -75,6 +77,9 @@ struct cs35l41_hda {
int speaker_id;
struct mutex fw_mutex;
struct work_struct fw_load_work;
+ struct snd_kcontrol *fw_type_ctl;
+ struct snd_kcontrol *fw_load_ctl;
+ struct snd_kcontrol *mute_override_ctl;
struct regmap_irq_chip_data *irq_data;
bool firmware_running;
generated by cgit 1.3-korg (git 2.53.0) at 2026-06-01 04:06:27 +0000