From: Dan Carpenter <dan.carpenter@oracle.com>
To: "David S. Miller" <davem@davemloft.net>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
Tom Gundersen <teg@jklm.no>,
David Herrmann <dh.herrmann@gmail.com>,
netdev@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch -next] ax25: remove unneeded NULL test in ax_xmit()
Date: Thu, 05 Mar 2015 17:48:46 +0000 [thread overview]
Message-ID: <20150305174846.GA17072@mwanda> (raw)
We get a static checker warning here on devel kernels:
drivers/net/hamradio/mkiss.c:560 ax_xmit()
warn: variable dereferenced before check 'skb' (see line 532)
It turns out that the NULL check can be deleted.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c
index 17058c4..2ffbf13 100644
--- a/drivers/net/hamradio/mkiss.c
+++ b/drivers/net/hamradio/mkiss.c
@@ -557,11 +557,9 @@ static netdev_tx_t ax_xmit(struct sk_buff *skb, struct net_device *dev)
}
/* We were not busy, so we are now... :-) */
- if (skb != NULL) {
- netif_stop_queue(dev);
- ax_encaps(dev, skb->data, skb->len);
- kfree_skb(skb);
- }
+ netif_stop_queue(dev);
+ ax_encaps(dev, skb->data, skb->len);
+ kfree_skb(skb);
return NETDEV_TX_OK;
}
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: "David S. Miller" <davem@davemloft.net>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
Tom Gundersen <teg@jklm.no>,
David Herrmann <dh.herrmann@gmail.com>,
netdev@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch -next] ax25: remove unneeded NULL test in ax_xmit()
Date: Thu, 5 Mar 2015 20:48:46 +0300 [thread overview]
Message-ID: <20150305174846.GA17072@mwanda> (raw)
We get a static checker warning here on devel kernels:
drivers/net/hamradio/mkiss.c:560 ax_xmit()
warn: variable dereferenced before check 'skb' (see line 532)
It turns out that the NULL check can be deleted.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c
index 17058c4..2ffbf13 100644
--- a/drivers/net/hamradio/mkiss.c
+++ b/drivers/net/hamradio/mkiss.c
@@ -557,11 +557,9 @@ static netdev_tx_t ax_xmit(struct sk_buff *skb, struct net_device *dev)
}
/* We were not busy, so we are now... :-) */
- if (skb != NULL) {
- netif_stop_queue(dev);
- ax_encaps(dev, skb->data, skb->len);
- kfree_skb(skb);
- }
+ netif_stop_queue(dev);
+ ax_encaps(dev, skb->data, skb->len);
+ kfree_skb(skb);
return NETDEV_TX_OK;
}
next reply other threads:[~2015-03-05 17:48 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-05 17:48 Dan Carpenter [this message]
2015-03-05 17:48 ` [patch -next] ax25: remove unneeded NULL test in ax_xmit() Dan Carpenter
2015-03-06 6:03 ` David Miller
2015-03-06 6:03 ` David Miller
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=20150305174846.GA17072@mwanda \
--to=dan.carpenter@oracle.com \
--cc=davem@davemloft.net \
--cc=dh.herrmann@gmail.com \
--cc=ebiederm@xmission.com \
--cc=kernel-janitors@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=teg@jklm.no \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.