Are you sure that the drivers you are using implement suspend and resume at all?

I am using s3c6410 code.I2S driver has suspend/resume call(jassi brar maintained). Audio codec is also having generic code for suspend/resume but don't know if that is the problem or not.However how can i verify if my codec suspend/resume has got some problem?Most likely my codec has got some configuration problems but i am not getting any pointers to debug it.Any pointers in this direction would be very helpful.