Subject: Re: [patch 10/14] ath9k: Use tasklet_disable_in_atomic()

From: Kalle Valo <[email-masked]>
Date: Tue, 09 Mar 2021 12:23:14 +0200

Thomas Gleixner <[email-masked]> writes:

> From: Sebastian Andrzej Siewior <[email-masked]>
>
> All callers of ath9k_beacon_ensure_primary_slot() are preemptible /
> acquire a mutex except for this callchain:
>
>   spin_lock_bh(&sc->sc_pcu_lock);
>   ath_complete_reset()
>   -> ath9k_calculate_summary_state()
>      -> ath9k_beacon_ensure_primary_slot()
>
> It's unclear how that can be distangled, so use tasklet_disable_in_atomic()
> for now. This allows tasklet_disable() to become sleepable once the
> remaining atomic users are cleaned up.
>
> Signed-off-by: Sebastian Andrzej Siewior <[email-masked]>
> Signed-off-by: Thomas Gleixner <[email-masked]>
> Cc: [email-masked]
> Cc: Kalle Valo <[email-masked]>
> Cc: "David S. Miller" <[email-masked]>
> Cc: Jakub Kicinski <[email-masked]>
> Cc: [email-masked]
> Cc: [email-masked]
> ---
>  drivers/net/wireless/ath/ath9k/beacon.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

I assume this goes via some other tree:

Acked-by: Kalle Valo <[email-masked]>

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