netdev - Re: [PATCH] net: ethernet: aquantia: fix alloc

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Date:   Fri, 20 Jan 2017 00:19:57 -0800
From:   Joe Perches <joe@...ches.com>
To:     kbuild test robot <lkp@...el.com>,
        Alexander Loktionov <Alexander.Loktionov@...antia.com>
Cc:     kbuild-all@...org, netdev@...r.kernel.org,
        David VomLehn <vomlehn@...as.net>,
        "David S . Miller" <davem@...emloft.net>,
        Simon Edelhaus <Simon.Edelhaus@...antia.com>,
        Dmitrii Tarakanov <Dmitrii.Tarakanov@...antia.com>,
        Pavel Belous <Pavel.Belous@...antia.com>,
        Dmitry Bezrukov <Dmitry.Bezrukov@...antia.com>
Subject: Re: [PATCH] net: ethernet: aquantia: fix alloc_cast.cocci warnings

On Thu, 2017-01-19 at 17:09 +0800, kbuild test robot wrote:
> drivers/net/ethernet/aquantia/atlantic/aq_ring.c:24:20-41: WARNING: casting value returned by memory allocation function to (struct aq_ring_buff_s *) is useless.
> 
>  Remove casting the values returned by memory allocation functions
>  like kmalloc, kzalloc, kmem_cache_alloc, kmem_cache_zalloc etc.
[]
> --- a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
> +++ b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
> @@ -21,7 +21,7 @@ static struct aq_ring_s *aq_ring_alloc(s
>  {
>  	int err = 0;
>  
> -	self->buff_ring = (struct aq_ring_buff_s *)
> +	self->buff_ring =
>  		kzalloc(sizeof(struct aq_ring_buff_s) * self->size, GFP_KERNEL);

This should likely be kcalloc