netdev - Re: [net-next 06/16] i40e: Properly cast type for arithmetic

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Date:	Wed, 25 Nov 2015 02:46:51 -0800
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	Joe Perches <joe@...ches.com>, davem@...emloft.net
Cc:	Helin Zhang <helin.zhang@...el.com>, netdev@...r.kernel.org,
	nhorman@...hat.com, sassmann@...hat.com, jogreene@...hat.com
Subject: Re: [net-next 06/16] i40e: Properly cast type for arithmetic

On Tue, 2015-11-24 at 16:43 -0800, Joe Perches wrote:
> On Tue, 2015-11-24 at 16:04 -0800, Jeff Kirsher wrote:
> > From: Helin Zhang <helin.zhang@...el.com>
> > 
> > Pointer of type void * shouldn't be used in arithmetic, which may
> > result in compilation error. Casting of (u8 *) can be added to fix
> > that.
> > 
> 
> void * arithmetic is used quite frequently in the kernel.
> 
> What compiler emits an error?

When you use the gcc -Wpointer-arith, it generates the warning.
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