修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/sound/i2c/cs8427.c
..
..
@@ -553,10 +553,13 @@
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 	if (snd_BUG_ON(!cs8427))
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 		return -ENXIO;
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 	chip = cs8427->private_data;
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-	if (active)
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+	if (active) {
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 		memcpy(chip->playback.pcm_status,
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 		       chip->playback.def_status, 24);
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-	chip->playback.pcm_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
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+		chip->playback.pcm_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
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+	} else {
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+		chip->playback.pcm_ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
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+	}
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 	snd_ctl_notify(cs8427->bus->card,
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 		       SNDRV_CTL_EVENT_MASK_VALUE | SNDRV_CTL_EVENT_MASK_INFO,
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 		       &chip->playback.pcm_ctl->id);