rk3568 rt init

hc

2023-11-06 e3e12f52b214121840b44c91de5b3e5af5d3eb84

 kernel/sound/core/control_compat.c
..
..
@@ -319,7 +319,9 @@
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 	err = snd_power_wait(card, SNDRV_CTL_POWER_D0);
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 	if (err < 0)
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 		goto error;
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+	down_read(&card->controls_rwsem);
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 	err = snd_ctl_elem_read(card, data);
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+	up_read(&card->controls_rwsem);
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 	if (err < 0)
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 		goto error;
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 	err = copy_ctl_value_to_user(userdata, valuep, data, type, count);
..
..
@@ -347,7 +349,9 @@
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 	err = snd_power_wait(card, SNDRV_CTL_POWER_D0);
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 	if (err < 0)
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 		goto error;
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+	down_write(&card->controls_rwsem);
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 	err = snd_ctl_elem_write(card, file, data);
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+	up_write(&card->controls_rwsem);
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 	if (err < 0)
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 		goto error;
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 	err = copy_ctl_value_to_user(userdata, valuep, data, type, count);