LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Adrian Bunk <bunk@stusta.de>
To: Stephen Hemminger <shemminger@osdl.org>
Cc: jgarzik@pobox.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: drivers/net/chelsio/my3126.c: inconsequent NULL checking
Date: Thu, 7 Dec 2006 12:34:52 +0100	[thread overview]
Message-ID: <20061207113452.GD8963@stusta.de> (raw)

The Coverity checker spotted the following inconsequent NULL checking 
introduced by commit f1d3d38af75789f1b82969b83b69cab540609789:

<--  snip  -->

...
static struct cphy *my3126_phy_create(adapter_t *adapter,
                        int phy_addr, struct mdio_ops *mdio_ops)
{
        struct cphy *cphy = kzalloc(sizeof (*cphy), GFP_KERNEL);

        if (cphy)
                cphy_init(cphy, adapter, phy_addr, &my3126_ops, mdio_ops);

        INIT_WORK(&cphy->phy_update, my3216_poll, cphy);
        cphy->bmsr = 0;

        return (cphy);
}
...

<--  snip  -->

It doesn't make sense to first check whether "cphy" is NULL and 
dereference it unconditionally later.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed


             reply	other threads:[~2006-12-07 11:34 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-12-07 11:34 Adrian Bunk [this message]
2006-12-07 13:22 ` Jesper Juhl

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20061207113452.GD8963@stusta.de \
    --to=bunk@stusta.de \
    --cc=jgarzik@pobox.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=netdev@vger.kernel.org \
    --cc=shemminger@osdl.org \
    --subject='Re: drivers/net/chelsio/my3126.c: inconsequent NULL checking' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).