netdev - Re: [PATCH] ath9k: remove set but not used variable 'acq'

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Date:   Mon, 25 Feb 2019 12:03:16 +0200
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Toke Høiland-Jørgensen <toke@...hat.com>
Cc:     YueHaibing <yuehaibing@...wei.com>,
        QCA ath9k Development <ath9k-devel@....qualcomm.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] ath9k: remove set but not used variable 'acq'

Toke Høiland-Jørgensen <toke@...hat.com> writes:

> YueHaibing <yuehaibing@...wei.com> writes:
>
>> Fixes gcc '-Wunused-but-set-variable' warning:
>>
>> drivers/net/wireless/ath/ath9k/recv.c: In function 'ath_rx_count_airtime':
>> drivers/net/wireless/ath/ath9k/recv.c:1010:18: warning:
>>  variable 'acq' set but not used [-Wunused-but-set-variable]
>>
>> It's not used after 89cea7493a34 ("ath9k: Switch to mac80211 TXQ scheduling
>> and airtime APIs"). Also remove related variables.
>
> Ah, right, seems I forgot to clean that up. I wonder why I didn't get a
> compiler warning for it.

I think the warning is not enabled by default and you need to use W=1
Makefile variable to enable it.

-- 
Kalle Valo