From: Dan Carpenter <dan.carpenter@oracle.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Tim Bird <tim.bird@sonymobile.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: Re: [patch] ARM: qcom: silence an uninitialized variable warning
Date: Thu, 14 Apr 2016 12:03:09 +0300 [thread overview]
Message-ID: <20160414090309.GF4247@mwanda> (raw)
In-Reply-To: <201604140353.03595.arnd@arndb.de>
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
prev parent reply other threads:[~2016-04-14 9:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-13 6:45 [patch] ARM: qcom: silence an uninitialized variable warning Dan Carpenter
2016-04-14 0:35 ` Tim Bird
2016-04-14 1:53 ` Arnd Bergmann
2016-04-14 9:03 ` Dan Carpenter [this message]
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