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

From: Jeff Kirsher <[email-masked]>
Date: Wed, 25 Nov 2015 02:46:51 -0800

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 <[email-masked]>
> > 
> > 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.