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@@ -564,7 +564,7 @@ rt_err_t rt_mutex_init(rt_mutex_t mutex, const char *name, rt_uint8_t flag)
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mutex->original_priority = 0xFF;
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mutex->hold = 0;
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- /* set flag and it can only be RT_IPC_FLAG_PRIO */
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+ /* flag can only be RT_IPC_FLAG_PRIO. RT_IPC_FLAG_FIFO cannot solve the unbounded priority inversion problem */
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mutex->parent.parent.flag = RT_IPC_FLAG_PRIO;
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return RT_EOK;
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@@ -628,7 +628,7 @@ rt_mutex_t rt_mutex_create(const char *name, rt_uint8_t flag)
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mutex->original_priority = 0xFF;
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mutex->hold = 0;
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- /* set flag and it can only be RT_IPC_FLAG_PRIO */
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+ /* flag can only be RT_IPC_FLAG_PRIO. RT_IPC_FLAG_FIFO cannot solve the unbounded priority inversion problem */
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mutex->parent.parent.flag = RT_IPC_FLAG_PRIO;
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return mutex;
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