From 3ba2fbf4d19bbdc1a779256827a32b02d97ea052 Mon Sep 17 00:00:00 2001
From: wangzijiao <hzwangzijiao@corp.netease.com>
Date: Wed, 12 Sep 2018 17:27:45 +0800
Subject: [PATCH] fix kernel crash by adau1761

---
 lichee/linux-4.9/drivers/misc/adau1761-r311-pv1.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lichee/linux-4.9/drivers/misc/adau1761-r311-pv1.c b/lichee/linux-4.9/drivers/misc/adau1761-r311-pv1.c
index 4f0229b97..791dbcd1c 100755
--- a/lichee/linux-4.9/drivers/misc/adau1761-r311-pv1.c
+++ b/lichee/linux-4.9/drivers/misc/adau1761-r311-pv1.c
@@ -2359,7 +2359,8 @@ static long adau1761_ioctl(struct file *file, unsigned int cmd,
     } break;
 
     case ADAU1761_CMD_VOL_GET: {
-        *(unsigned long *)arg = (unsigned long)adau1761_priv.vol;
+        //*(unsigned long *)arg = (unsigned long)adau1761_priv.vol;
+        put_user((unsigned long)adau1761_priv.vol, (unsigned long *)arg);
     } break;
 
     case ADAU1761_CMD_AMP_MUTE_SET: {