+		return -ENODEV;
 	kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 	if (!kctl)
 		return -ENOENT;
@@ -839,6 +849,8 @@ static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned
 	if (uinfo == NULL || uctl == NULL)
 		return -ENOMEM;
 	guard(rwsem_read)(&card->controls_rwsem);
+	if (card->shutdown)
+		return -ENODEV;
 	kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
 	if (!kctl)
 		return -ENOENT;
@@ -885,6 +897,8 @@ static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *sl
 	if (!info)
 		return -ENOMEM;
 	scoped_guard(rwsem_read, &card->controls_rwsem) {
+		if (card->shutdown)
+			return -ENODEV;
 		kcontrol = snd_mixer_oss_test_id(mixer, name, index);
 		if (kcontrol == NULL)
 			return 0;
@@ -1006,6 +1020,8 @@ static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer,
 	if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
 		return 0;
 	guard(rwsem_read)(&mixer->card->controls_rwsem);
+	if (mixer->card->shutdown)
+		return -ENODEV;
 	kctl = NULL;
 	if (!ptr->index)
 		kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
-- 
2.51.0[PATCH 6.19 244/844] ALSA: mixer: oss: Add card disconnect checkpointsSasha Levin <sashal@kernel.org> undefinedlinux-kernel@vger.kernel.org, stable@vger.kernel.org undefined undefined undefinedŠ