[PATCH v3] ath10k: add flag to protect napi operation to avoid dead loop hang

Wen Gong wgong at codeaurora.org
Mon Sep 7 23:45:24 EDT 2020

On 2020-09-08 00:22, Kalle Valo wrote:
> Wen Gong <wgong at codeaurora.org> writes:
> Just like with the recent firmware restart patch, isn't 
> ar->napi_enabled
> racy? Wouldn't test_and_set_bit() and test_and_clear_bit() be safer?
> Or are we holding a lock? But then that should be documented with
> lockdep_assert_held().
yes, ath10k_hif_start is only called from ath10k_core_start, it has 
and ath10k_hif_stop is only called from ath10k_core_stop, it also has 
then it will not 2 thread both enter ath10k_hif_start/ath10k_hif_stop 

More information about the ath10k mailing list