AM1808 PRU SUART suart_emu.ko

HI,

I use AM1808 PRU configure as 8 channel Uart, but now I have some problems：

I use the module to load way to use PRU like this:

     insmod suart_emu.ko

When system starts ,the uarts run normal ,but many days later all uarts not work again,they can not send and receive data ;

Only when I did the following work did they work properly

1、modprobe -r suart_emu

2、insmod suart_emu.ko

Then the uart work properly.

My headache is that the frequency of this problem is not fixed

And not every one appears, there are currently about 1000 units, only 5 have emerged this problem.

I want to know if there is anyone who has met this problem, how to solve it, thank you

  Best regards