From: Dan Carpenter <dan.carpenter@oracle.com>
To: Pavel Machek <pavel@denx.de>
Cc: mark.rutland@arm.com, linux-doc@vger.kernel.org,
rubini@gnudd.com, pantelis.antoniou@konsulko.com, hpa@zytor.com,
s.trumtrar@pengutronix.de, devel@driverdev.osuosl.org,
sameo@linux.intel.com, nico@linaro.org, iws@ovro.caltech.edu,
michal.simek@xilinx.com, kyle.teske@ni.com,
jgunthorpe@obsidianresearch.com, grant.likely@linaro.org,
davidb@codeaurora.org, linus.walleij@linaro.org,
cesarb@cesarb.net, devicetree@vger.kernel.org,
jason@lakedaemon.net, pawel.moll@arm.com,
ijc+devicetree@hellion.org.uk, atull@opensource.altera.com,
galak@codeaurora.org, broonie@kernel.org, philip@balister.org,
Petr Cvek <petr.cvek@tul.cz>,
akpm@linux-foundation.org, monstr@monstr.eu,
gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
balbi@ti.com, davem@davemloft.net, robh+dt@kernel.org,
rob@landley.net, Josh Cartwright <joshc@ni.com>,
dinguyen@opensource.altera.com, delicious.quinoa@gma
Subject: Re: [PATCH v11 3/4] add FPGA manager core
Date: Wed, 23 Sep 2015 17:11:06 +0300 [thread overview]
Message-ID: <20150923141106.GH4953@mwanda> (raw)
In-Reply-To: <20150923132354.GB31253@amd>
On Wed, Sep 23, 2015 at 03:23:54PM +0200, Pavel Machek wrote:
> > > +int fpga_mgr_firmware_load(struct fpga_manager *mgr, u32 flags,
> > > + const char *image_name)
> > > +{
> > > + struct device *dev = &mgr->dev;
> > > + const struct firmware *fw;
> > > + int ret;
> > > +
> > > + if (!mgr)
> > > + return -ENODEV;
> >
> > Again; I'm of the opinion this is needlessly defensive.
>
> Not only that, it can never happen. mgr is already dereferenced above.
>
It's not dereferenced. We're taking the address of mgr->dev but we
don't dereference mgr.
regards,
dan carpenter
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Pavel Machek <pavel@denx.de>
Cc: Josh Cartwright <joshc@ni.com>,
mark.rutland@arm.com, linux-doc@vger.kernel.org,
rubini@gnudd.com, pantelis.antoniou@konsulko.com, hpa@zytor.com,
s.trumtrar@pengutronix.de, devel@driverdev.osuosl.org,
sameo@linux.intel.com, nico@linaro.org,
ijc+devicetree@hellion.org.uk, michal.simek@xilinx.com,
kyle.teske@ni.com, jgunthorpe@obsidianresearch.com,
grant.likely@linaro.org, davidb@codeaurora.org,
linus.walleij@linaro.org, cesarb@cesarb.net,
devicetree@vger.kernel.org, jason@lakedaemon.net,
pawel.moll@arm.com, iws@ovro.caltech.edu,
atull@opensource.altera.com, broonie@kernel.org,
philip@balister.org, Petr Cvek <petr.cvek@tul.cz>,
dinguyen@opensource.altera.com, monstr@monstr.eu,
gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
balbi@ti.com, delicious.quinoa@gmail.com, robh+dt@kernel.org,
rob@landley.net, galak@codeaurora.org, akpm@linux-foundation.org,
davem@davemloft.net, m.chehab@samsung.com
Subject: Re: [PATCH v11 3/4] add FPGA manager core
Date: Wed, 23 Sep 2015 17:11:06 +0300 [thread overview]
Message-ID: <20150923141106.GH4953@mwanda> (raw)
In-Reply-To: <20150923132354.GB31253@amd>
On Wed, Sep 23, 2015 at 03:23:54PM +0200, Pavel Machek wrote:
> > > +int fpga_mgr_firmware_load(struct fpga_manager *mgr, u32 flags,
> > > + const char *image_name)
> > > +{
> > > + struct device *dev = &mgr->dev;
> > > + const struct firmware *fw;
> > > + int ret;
> > > +
> > > + if (!mgr)
> > > + return -ENODEV;
> >
> > Again; I'm of the opinion this is needlessly defensive.
>
> Not only that, it can never happen. mgr is already dereferenced above.
>
It's not dereferenced. We're taking the address of mgr->dev but we
don't dereference mgr.
regards,
dan carpenter
next prev parent reply other threads:[~2015-09-23 14:11 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-22 15:21 [PATCH v11 0/4] FPGA Manager Framework atull
2015-09-22 15:21 ` atull
2015-09-22 15:21 ` [PATCH v11 1/4] usage documentation for FPGA manager core atull
2015-09-22 15:21 ` atull
2015-09-23 0:50 ` Moritz Fischer
2015-09-23 0:50 ` Moritz Fischer
2015-09-22 15:21 ` [PATCH v11 2/4] fpga manager: add sysfs interface document atull
2015-09-22 15:21 ` atull
[not found] ` <1442935271-10375-3-git-send-email-atull-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>
2015-09-23 0:52 ` Moritz Fischer
2015-09-23 0:52 ` Moritz Fischer
2015-09-22 15:21 ` [PATCH v11 3/4] add FPGA manager core atull
2015-09-22 15:21 ` atull
[not found] ` <1442935271-10375-4-git-send-email-atull-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>
2015-09-22 22:29 ` Josh Cartwright
2015-09-22 22:29 ` Josh Cartwright
2015-09-23 13:23 ` Pavel Machek
2015-09-23 13:23 ` Pavel Machek
2015-09-23 14:11 ` Dan Carpenter [this message]
2015-09-23 14:11 ` Dan Carpenter
2015-09-23 16:15 ` atull
2015-09-23 16:15 ` atull
2015-09-24 7:49 ` Dan Carpenter
2015-09-24 7:49 ` Dan Carpenter
2015-09-24 20:47 ` atull
2015-09-24 20:47 ` atull
2015-09-24 21:13 ` Pavel Machek
2015-09-24 21:13 ` Pavel Machek
2015-09-25 10:00 ` Dan Carpenter
2015-09-25 10:00 ` Dan Carpenter
2015-09-23 17:10 ` atull
2015-09-23 17:10 ` atull
2015-09-23 23:03 ` Josh Cartwright
2015-09-23 23:03 ` Josh Cartwright
2015-09-24 20:24 ` atull
2015-09-24 20:24 ` atull
2015-09-22 15:21 ` [PATCH v11 4/4] fpga manager: add driver for socfpga fpga manager atull
2015-09-22 15:21 ` atull
2015-09-22 22:47 ` Josh Cartwright
2015-09-22 22:47 ` Josh Cartwright
-- strict thread matches above, loose matches on Subject: below --
2015-10-07 15:36 [PATCH v11 0/4] FPGA Manager Framework atull
2015-10-07 15:36 ` [PATCH v11 3/4] add FPGA manager core atull
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