--- zzzz-none-000/linux-3.10.107/sound/pcmcia/pdaudiocf/pdaudiocf_core.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/sound/pcmcia/pdaudiocf/pdaudiocf_core.c	2021-02-04 17:41:59.000000000 +0000
@@ -162,9 +162,8 @@
 	if (chip == NULL)
 		return NULL;
 	chip->card = card;
-	spin_lock_init(&chip->reg_lock);
+	mutex_init(&chip->reg_lock);
 	spin_lock_init(&chip->ak4117_lock);
-	tasklet_init(&chip->tq, pdacf_tasklet, (unsigned long)chip);
 	card->private_data = chip;
 
 	pdacf_proc_init(chip);
@@ -174,19 +173,18 @@
 static void snd_pdacf_ak4117_change(struct ak4117 *ak4117, unsigned char c0, unsigned char c1)
 {
 	struct snd_pdacf *chip = ak4117->change_callback_private;
-	unsigned long flags;
 	u16 val;
 
 	if (!(c0 & AK4117_UNLCK))
 		return;
-	spin_lock_irqsave(&chip->reg_lock, flags);
+	mutex_lock(&chip->reg_lock);
 	val = chip->regmap[PDAUDIOCF_REG_SCR>>1];
 	if (ak4117->rcs0 & AK4117_UNLCK)
 		val |= PDAUDIOCF_BLUE_LED_OFF;
 	else
 		val &= ~PDAUDIOCF_BLUE_LED_OFF;
 	pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, val);
-	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	mutex_unlock(&chip->reg_lock);
 }
 
 int snd_pdacf_ak4117_create(struct snd_pdacf *chip)