why the AIF module can't get its status?

In the project we use C647x 's AIF interface to transmit data

In the initial process, we use  CSL_aifInit()  CSL_aifOpen() and CSL_aifHwControl() to initiate AIF

but in later process,we can't read out AIF status using CSL_aifHwStatus()     (All result is all 0, but the function returns CSL_SOK)

Have anyone come into contact with the same problem? Do you have any method to resolve?