--- zzzz-none-000/linux-3.10.107/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/sound/pcmcia/pdaudiocf/pdaudiocf_pcm.c	2021-02-04 17:41:59.000000000 +0000
@@ -77,7 +77,7 @@
 	default:
 		return -EINVAL;
 	}
-	spin_lock(&chip->reg_lock);
+	mutex_lock(&chip->reg_lock);
 	chip->pcm_running += inc;
 	tmp = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
 	if (chip->pcm_running) {
@@ -91,7 +91,7 @@
 	tmp |= val;
 	pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, tmp);
       __end:
-	spin_unlock(&chip->reg_lock);
+	mutex_unlock(&chip->reg_lock);
 	snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_RATE);
 	return ret;
 }
@@ -296,6 +296,7 @@
 
 	pcm->private_data = chip;
 	pcm->info_flags = 0;
+	pcm->nonatomic = true;
 	strcpy(pcm->name, chip->card->shortname);
 	chip->pcm = pcm;