how memory is deallocated for ahp9287 (AR9287)

[malepati vishnuvardhan]

Hi,
I found this code in ar9287_attach.c:
in ar9287Attach() function.
ahp9287 = ath_hal_malloc(sizeof (struct ath_hal_9287));

during detach they just freed (ath_hal) ah.
I searched every where and cant find it.
please let me know where ahp9287 is deallocated.

Thanks and regards,
vishnu