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[kernel] fix device_open oflag comparison error. #7512

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Merged
merged 1 commit into from
May 16, 2023
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[kernel] fix device_open oflag comparison error. #7512

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2 changes: 1 addition & 1 deletion src/device.c
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Original file line number Diff line number Diff line change
Expand Up @@ -235,7 +235,7 @@ rt_err_t rt_device_open(rt_device_t dev, rt_uint16_t oflag)

/* device is not opened or opened by other oflag, call device_open interface */
if (!(dev->open_flag & RT_DEVICE_OFLAG_OPEN) ||
((dev->open_flag & RT_DEVICE_OFLAG_MASK) | (oflag & RT_DEVICE_OFLAG_MASK)))
((dev->open_flag & RT_DEVICE_OFLAG_MASK) != (oflag & RT_DEVICE_OFLAG_MASK)))
{
if (device_open != RT_NULL)
{
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