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Re: [PATCH v5.7 7/8] iwlwifi: mvm: fix inactive TID removal return value usage

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On Fri, Apr 3, 2020 at 4:31 AM Luca Coelho <luca@xxxxxxxxx> wrote:
>
> From: Johannes Berg <johannes.berg@xxxxxxxxx>

I sent Johannes part of this fix weeks ago and heard nothing back. I
am far from a glory hound but something is wrong with this list if
fixes are sat on for weeks and then the fix shows up with any
acknowledgment lost. At minimum a note saying that a fix existed and
would be merged shortly would have been nice.

Mark

>
> The function iwl_mvm_remove_inactive_tids() returns bool, so we
> should just check "if (ret)", not "if (ret >= 0)" (which would
> do nothing useful here). We obviously therefore cannot use the
> return value of the function for the free_queue, we need to use
> the queue (i) we're currently dealing with instead.
>
> Cc: stable@xxxxxxxxxxxxxxx # v5.4+
> Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
> Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
> ---
>  drivers/net/wireless/intel/iwlwifi/mvm/sta.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
> index 251d6fbb1da5..56ae72debb96 100644
> --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
> +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
> @@ -1169,9 +1169,9 @@ static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta)
>                                                    inactive_tid_bitmap,
>                                                    &unshare_queues,
>                                                    &changetid_queues);
> -               if (ret >= 0 && free_queue < 0) {
> +               if (ret && free_queue < 0) {
>                         queue_owner = sta;
> -                       free_queue = ret;
> +                       free_queue = i;
>                 }
>                 /* only unlock sta lock - we still need the queue info lock */
>                 spin_unlock_bh(&mvmsta->lock);
> --
> 2.25.1
>



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