[PATCH] staging: greybus: power_supply: Use struct_size() helper

Johan Hovold johan at kernel.org
Thu Apr 4 07:24:00 UTC 2019


On Thu, Apr 04, 2019 at 08:09:51AM +0100, Rui Miguel Silva wrote:
> Hi Gustavo,
> Thanks a lot for the patch.
> 
> On Wed 03 Apr 2019 at 21:58, Gustavo A. R. Silva wrote:
> > Make use of the struct_size() helper instead of an open-coded 
> > version
> > in order to avoid any potential type mistakes, in particular in 
> > the
> > context in which this code is being used.
> >
> > So, replace code of the following form:
> >
> > sizeof(*resp) + props_count * sizeof(struct 
> > gb_power_supply_props_desc)
> >
> > with:
> >
> > struct_size(resp, props, props_count)
> >
> > This code was detected with the help of Coccinelle.
> >
> > Signed-off-by: Gustavo A. R. Silva <gustavo at embeddedor.com>
> 
> What are the odds of 2 people changing same code in greybus in
> the same day :).

Well, I only noticed the bug in the current code, when reviewing
Gustavo's diff. ;)

Johan


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