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

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Message-Id: <20151124.205729.1005974063494742153.davem@davemloft.net>
Date:	Tue, 24 Nov 2015 20:57:29 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	joe@...ches.com
Cc:	jeffrey.t.kirsher@...el.com, 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

From: Joe Perches <joe@...ches.com>
Date: Tue, 24 Nov 2015 16:43:32 -0800

> 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?

Agreed, "void *" arithmetic should work universally with all compilers
used to build the kernel, otherwise so much crap would break.
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