Android device keeps restarting after flashing USB serial driver

[pirpi srd]

Hi all,

        I have build a kernel by statically adding CP210X USB serial driver. Then I have created a boot.img from zimage, ramdisk and dt.img using the mkbootimg tool. But after flashing this boot.img into android device, the android device starts restarting after particular interval and usually when I plugin and plug out OTG cable. 

Is their any way to solve this problem? 

Could anybody please help me with this? 

Thanks 

pirpi