linux-kernel - Re: [PATCH] wireless: zd1211rw: remove redundant assignment of pointer 'q'

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Message-ID: <CAHp75Vc_8v3qxWjtT4B3Kvz4dNZ8=-+uRPs-iTK3o8Taa4Swgw@mail.gmail.com>
Date:   Wed, 31 Jan 2018 14:58:57 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Colin King <colin.king@...onical.com>
Cc:     Daniel Drake <dsd@...too.org>, Ulrich Kunitz <kune@...ne-taler.de>,
        Kalle Valo <kvalo@...eaurora.org>,
        "open list:TI WILINK WIRELES..." <linux-wireless@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>, kernel-janitors@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] wireless: zd1211rw: remove redundant assignment of
 pointer 'q'

On Tue, Jan 30, 2018 at 8:25 PM, Colin King <colin.king@...onical.com> wrote:
> From: Colin Ian King <colin.king@...onical.com>
>
> Pointer q is initialized and then almost immediately afterwards being
> re-assigned the same value. Remove the second redundant assignment.
>

Don't you see strange that in the same context of the patch two users
of q are present?

How did you test this?

> Cleans up clang warning:
> drivers/net/wireless/zydas/zd1211rw/zd_mac.c:503:23: warning: Value
> stored to 'q' during its initialization is never read

> -       q = &mac->ack_wait_queue;
>         spin_lock_irqsave(&q->lock, flags);
>
>         skb_queue_walk(q, skb) {



-- 
With Best Regards,
Andy Shevchenko