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Update adc.c

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check fun is NULL, error
This commit is contained in:
KE1VG8CBMISQ6ED\Administrator 2018-12-08 22:56:34 +08:00
parent 506ccc573c
commit 895fb5c1a9
1 changed files with 1 additions and 1 deletions
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2
components/drivers/misc/adc.c
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@ -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_err_t result = RT_EOK;
rt_adc_device_t adc = (struct rt_adc_device *)dev; 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; return -RT_ENOSYS;
} }