MPU-9250 FIFO not filling anymore

We are using SPI connected MPU-9250 on the beaglebone clone board. We are getting data through FIFO. All was working fine till yesterday. Now we can read and write MPU registers, but FIFO not filling. Reading FIFO_COUNTH (114) and FIFO_COUNTL (115) registers always return 0. Power cycling did not help.

Is there any possibility to check that MPU internals are working as intended ?