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ath9k: Handle FATAL interrupts correctly 

When a FATAL interrupt is received, a full chip reset is
required, which is done in the main tasklet. But since
the reset routine is scheduled as a work item, make sure
that interrupts are not enabled in the tasklet before the
reset is done.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith Manoharan 2013-09-16 10:37:00 +05:30 committed by John W. Linville
parent 8a5b7ab36b
commit c6cc47b101
1 changed files with 8 additions and 2 deletions
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10
drivers/net/wireless/ath/ath9k/main.c
View File

@ -362,6 +362,13 @@ void ath9k_tasklet(unsigned long data)
type = RESET_TYPE_BB_WATCHDOG; type = RESET_TYPE_BB_WATCHDOG;
ath9k_queue_reset(sc, type); ath9k_queue_reset(sc, type);
/*
* Increment the ref. counter here so that
* interrupts are enabled in the reset routine.
*/
atomic_inc(&ah->intr_ref_cnt);
ath_dbg(common, ANY, "FATAL: Skipping interrupts\n");
goto out; goto out;
} }
@ -400,10 +407,9 @@ void ath9k_tasklet(unsigned long data)
ath9k_btcoex_handle_interrupt(sc, status); ath9k_btcoex_handle_interrupt(sc, status);
out:
/* re-enable hardware interrupt */ /* re-enable hardware interrupt */
ath9k_hw_enable_interrupts(ah); ath9k_hw_enable_interrupts(ah);
out:
spin_unlock(&sc->sc_pcu_lock); spin_unlock(&sc->sc_pcu_lock);
ath9k_ps_restore(sc); ath9k_ps_restore(sc);
} }