Friendly arm of the reboot problem tiny210 v2

android 4.0.3, has root.
Reboot the system with c write a program, and then test: start the system when run directly after the restart process, the system can properly restart. However, after running over other Android apps, and then write their own c program to restart the system, on the restart is not up (black or white screen just freezes up, like), even if those who kill and then restart the program does not work.
I do not know if anyone encountered the same problem, there is no solution.

/ / The following java also tried this approach, the question as
PowerManager pManager = (PowerManager) getSystemService (Context.POWER_SERVICE);
pManager.reboot ("");

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