From 895fb5c1a9618a1cc199f4c806a2ba115b004038 Mon Sep 17 00:00:00 2001
From: "KE1VG8CBMISQ6ED\\Administrator" <115523805@qq.com>
Date: Sat, 8 Dec 2018 22:56:34 +0800
Subject: [PATCH] Update adc.c

check fun is NULL, error
---
 components/drivers/misc/adc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/drivers/misc/adc.c b/components/drivers/misc/adc.c
index aa3a3b7801..83e789a6e4 100644
--- a/components/drivers/misc/adc.c
+++ b/components/drivers/misc/adc.c
@@ -46,7 +46,7 @@ static rt_err_t _adc_control(rt_device_t dev, int cmd, void *args)
     rt_err_t result = RT_EOK;
     rt_adc_device_t adc = (struct rt_adc_device *)dev;
 
-    if (adc->ops->enabled != RT_NULL)
+    if (adc->ops->enabled == RT_NULL)
     {
         return -RT_ENOSYS;
     }
-- 
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