Test case gets into an infinite loop while two tasks are trying to access the same instance for FAT transfer. For the test case two tasks are created which try to  write and read back a file from the SD card. It is observed that the test case is  in a while loop waiting  for the statuses from  'MMCSD_xferStatusPollingFxn' in  'MMCSD_transfer' . The same behavior is also observed when tasks try to access the EMMC. Another test case which accesses SD card in task1 and EMMC in task2 passes without any issue.