RTOS/AM4376: Linux-RT GPIO interrupt issue

Part Number:AM4376

Tool/software:TI-RTOS

Hi,TI:

I use the interrupt to receive the printer's data. But sometimes will receive more data, and sometimes will receive less data, that is, the number of interrupted wrong. I am using the processor is am4376, the environment is PROCESSOR-SDK-LINUX-RT-AM437X 03_01_00_06.Gpio interrupt pin is gpio4_11. In the case of printing the same data, the count in the interrupt service function is different. I do not know what to do, can you help me? Thank you.