From: walter harms <wharms@bfs.de>
To: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: "John W. Linville" <linville@tuxdriver.com>,
kernel-janitors@vger.kernel.org,
libertas-dev@lists.infradead.org, linux-wireless@vger.kernel.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/13] libertas: make return of 0 explicit
Date: Mon, 19 May 2014 09:43:25 +0200 [thread overview]
Message-ID: <5379B61D.7070501@bfs.de> (raw)
In-Reply-To: <1400473875-22228-2-git-send-email-Julia.Lawall@lip6.fr>
Am 19.05.2014 06:31, schrieb Julia Lawall:
> From: Julia Lawall <Julia.Lawall@lip6.fr>
>
> Delete unnecessary local variable whose value is always 0 and that hides
> the fact that the result is always 0.
>
> A simplified version of the semantic patch that fixes this problem is as
> follows: (http://coccinelle.lip6.fr/)
>
> // <smpl>
> @r exists@
> local idexpression ret;
> expression e;
> position p;
> @@
>
> -ret = 0;
> ... when != ret = e
> return
> - ret
> + 0
> ;
> // </smpl>
>
> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
>
> ---
> Alternatively, was an error code intended in the bad length case, as is
> done in process_brxed_802_11_packet?
>
> drivers/net/wireless/libertas/rx.c | 7 ++-----
> 1 file changed, 2 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/net/wireless/libertas/rx.c b/drivers/net/wireless/libertas/rx.c
> index c7366b0..807c5b8 100644
> --- a/drivers/net/wireless/libertas/rx.c
> +++ b/drivers/net/wireless/libertas/rx.c
> @@ -55,7 +55,6 @@ static int process_rxed_802_11_packet(struct lbs_private *priv,
> */
> int lbs_process_rxed_packet(struct lbs_private *priv, struct sk_buff *skb)
> {
> - int ret = 0;
> struct net_device *dev = priv->dev;
> struct rxpackethdr *p_rx_pkt;
> struct rxpd *p_rx_pd;
> @@ -86,7 +85,6 @@ int lbs_process_rxed_packet(struct lbs_private *priv, struct sk_buff *skb)
> if (skb->len < (ETH_HLEN + 8 + sizeof(struct rxpd))) {
> lbs_deb_rx("rx err: frame received with bad length\n");
> dev->stats.rx_length_errors++;
> - ret = 0;
> dev_kfree_skb(skb);
> goto done;
> }
> @@ -154,10 +152,9 @@ int lbs_process_rxed_packet(struct lbs_private *priv, struct sk_buff *skb)
> else
> netif_rx_ni(skb);
>
> - ret = 0;
> done:
> - lbs_deb_leave_args(LBS_DEB_RX, "ret %d", ret);
> - return ret;
> + lbs_deb_leave_args(LBS_DEB_RX, "ret %d", 0);
> + return 0;
> }
i guess lbs_deb_leave_args() is obsolet now.
re,
wh
> EXPORT_SYMBOL_GPL(lbs_process_rxed_packet);
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
next prev parent reply other threads:[~2014-05-19 7:43 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-19 4:31 [PATCH 0/13] make return of 0 explicit Julia Lawall
2014-05-19 4:31 ` [PATCH 1/13] libertas: " Julia Lawall
2014-05-19 7:43 ` walter harms [this message]
2014-05-19 12:45 ` Sergei Shtylyov
2014-05-19 17:25 ` Dan Williams
2014-05-22 12:32 ` [PATCH] libertas: fix return value when processing invalid packet Dan Williams
2014-05-22 21:57 ` James Cameron
2014-05-20 0:30 ` [PATCH 1/13] libertas: make return of 0 explicit Julia Lawall
2014-05-20 0:36 ` Julia Lawall
2014-05-19 4:31 ` [PATCH 12/13] brcmsmac: " Julia Lawall
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=5379B61D.7070501@bfs.de \
--to=wharms@bfs.de \
--cc=Julia.Lawall@lip6.fr \
--cc=kernel-janitors@vger.kernel.org \
--cc=libertas-dev@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-wireless@vger.kernel.org \
--cc=linville@tuxdriver.com \
--cc=netdev@vger.kernel.org \
/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 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).