(gdb) list *ath9k_tx+start+0x284
No symbol "start" in current context.

hey, pls try l *(ath9k_tx_start+0x284), yesterday i did the same in
the latest wireless testing tree it pointed to line 1929 of xmit.c

sc->tx.seq_no +=0x10;

also did few suspend/resume in my machine, nothing interesting happened

before receiving the email to do the above code with gdb I had cleaned the
tree out with git clean -fx so rebuilding might have misalighned things(but
could be wrong)..

-- 
thanks,
shafi