From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julia Lawall Subject: Re: [PATCH] leds: pca9532: fix device_node_continue.cocci warnings Date: Fri, 30 Dec 2016 17:24:56 +0100 (CET) Message-ID: References: <963119a2-efe4-86ef-16a8-85e5f4487b66@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Return-path: Received: from mail2-relais-roc.national.inria.fr ([192.134.164.83]:55885 "EHLO mail2-relais-roc.national.inria.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751854AbcL3QY7 (ORCPT ); Fri, 30 Dec 2016 11:24:59 -0500 In-Reply-To: Sender: linux-leds-owner@vger.kernel.org List-Id: linux-leds@vger.kernel.org To: Jacek Anaszewski Cc: Julia Lawall , Joachim Eastwood , Riku Voipio , Richard Purdie , Pavel Machek , linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org, kbuild-all@01.org, fengguang.wu@intel.com On Fri, 30 Dec 2016, Jacek Anaszewski wrote: > On 12/29/2016 10:39 PM, Julia Lawall wrote: > > > > > > On Thu, 29 Dec 2016, Jacek Anaszewski wrote: > > > >> Hi Julia, > >> > >> This patch doesn't apply to current for-next branch > >> of linux-leds.git. > > > > The information about where it comes from is below the ---. It's > > automatically send to me by kbuild, so I don't know anything more than > > that. I recall from the original message that the code was committed > > around an hour ago. > > In mainline as well as in linux-next we have only the following patch > touching pca9532_of_populate_pdata() (it adds the function): > > commit fa4191a609f219262a18dd8b02ab7dc30896b707 > Author: Phil Reid > Date: Tue Jun 14 15:36:17 2016 +0800 > > leds: pca9532: Add device tree support > > This patch adds basic device tree support for the pca9532 LEDs. > > Signed-off-by: Phil Reid > Signed-off-by: Jacek Anaszewski > > > It doesn't have the problems the kbuild detected in > https://github.com/manabian/linux-lpc lpc18xx_43xx_devel. > The git history for leds-pca9532.c in that repository is > different from the one in mainline. > > I don't see a point in reporting problems in repositories > other than mainline or linux-next. I think you can let Fengguang know which trees you want monitored: fengguang.wu@intel.com julia > > Best regards, > Jacek Anaszewski > > > >> > >> On 12/29/2016 10:10 PM, Julia Lawall wrote: > >>> Device node iterators put the previous value of the index variable, so an > >>> explicit put causes a double put. > >>> > >>> Generated by: scripts/coccinelle/iterators/device_node_continue.cocci > >>> > >>> Signed-off-by: Julia Lawall > >>> Signed-off-by: Fengguang Wu > >>> --- > >>> > >>> I haven't looked at the context in detail, but given the rule, I assume > >>> that there is an iterator, such as for_each_child_of_node, and these > >>> iterators do a put on each iteration, so none is needed in the loop body. > >>> > >>> tree: https://github.com/manabian/linux-lpc lpc18xx_43xx_devel > >>> head: 9ee5f58bbb16c08da223c4b4933457e0eb72268d > >>> commit: c58957273142be779f62c17fae389ce9c134139f [44/55] leds: pca9532: use > >>> > >>> leds-pca9532.c | 3 --- > >>> 1 file changed, 3 deletions(-) > >>> > >>> --- a/drivers/leds/leds-pca9532.c > >>> +++ b/drivers/leds/leds-pca9532.c > >>> @@ -473,7 +473,6 @@ pca9532_of_populate_pdata(struct device > >>> > >>> res = of_property_read_u32(child, "reg", ®); > >>> if ((res != 0) || (reg >= maxleds)) { > >>> - of_node_put(child); > >>> continue; > >>> } > >>> > >>> @@ -484,8 +483,6 @@ pca9532_of_populate_pdata(struct device > >>> of_property_read_u32(child, "type", &pdata->leds[reg].type); > >>> of_property_read_string(child, "linux,default-trigger", > >>> &pdata->leds[reg].default_trigger); > >>> - > >>> - of_node_put(child); > >>> } > >>> > >>> return pdata; > >>> > >> > >> > > > > -- > Best regards, > Jacek Anaszewski >