Re: [patch] ARM: qcom: silence an uninitialized variable warning

Dan Carpenter
2016-04-14T09:03:26Z

On Thu, Apr 14, 2016 at 03:53:03AM +0200, Arnd Bergmann wrote:
> On Wednesday 13 April 2016, Dan Carpenter wrote:
> > It's harmless but, if "enable" isn't set, then we pass uninitialized
> > values to qcom_coincell_chgr_config(). The values aren't used, but
> > let's silence the warning anyway.
> >
> > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
>
> I haven't seen this warning in my tests, which means it probably doesn't show up
> in the usual configurations. Are you sure this doesn't just happen with
> CONFIG_PROFILE_ALL_BRANCHES, CONFIG_CC_OPTIMIZE_FOR_SIZE or CONFIG_GCOV_PROFILE_ALL,
> or with versions of gcc before 4.9?
>

This is a smatch stuff I'm working on. Realistically, I have to make
Smatch warn when we pass uninitialized values to a function. I can't
make smatch do the extra analysis to test if the values are used or not.

regards,
dan carpenter