From mboxrd@z Thu Jan 1 00:00:00 1970 From: Baoquan He Subject: Re: [PATCH v5 2/4] resource: Use list_head to link sibling resource Date: Wed, 13 Jun 2018 14:55:47 +0800 Message-ID: <20180613065547.GH1820@MiWiFi-R3L-srv> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-nvdimm-bounces-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org Sender: "Linux-nvdimm" To: Julia Lawall Cc: brijesh.singh-5C7GfCeVMHo@public.gmane.org, thomas.lendacky-5C7GfCeVMHo@public.gmane.org, airlied-cv59FeDIM0c@public.gmane.org, linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, richard.weiyang-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, keith.busch-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, jcmvbkbc-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, baiyaowei-0p4V/sDNsUmm0O/7XYngnFaTQe2KTcn/@public.gmane.org, frowand.list-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, lorenzo.pieralisi-5wv7dgnIgG8@public.gmane.org, sthemmin-0li6OtcxBFHby3iVrkZq2A@public.gmane.org, linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org, patrik.r.jakobsson-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, linux-input-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, gustavo-THi1TnShQwVAfugRpC6u6w@public.gmane.org, dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, kbuild-all-JC7UmRfGjtg@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, haiyangz-0li6OtcxBFHby3iVrkZq2A@public.gmane.org, maarten.lankhorst-VuQAYsv1563Yd54FQh9/CA@public.gmane.org, jglisse-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, seanpaul-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org, bhelgaas-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org, tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org, yinghai-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, jonathan.derrick-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, chris-YvXeqwSYzG2sTnJN9+BGXg@public.gmane.org, monstr-pSz03upnqPeHXe+LvDLADg@public.gmane.org, linux-parisc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org, dmitry.torokhov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, kexec-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org, devel-tBiZLqfeLfOHmIFyCCdPziST3g8Odh+X@public.gmane.org, linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, davem-fT/PcQaiUtJq0hI55+XSNA@public.gmane.org List-Id: linux-input@vger.kernel.org On 06/12/18 at 05:10pm, Julia Lawall wrote: > This looks wrong. After a list iterator, the index variable points to a > dummy structure. > > julia > > url: https://github.com/0day-ci/linux/commits/Baoquan-He/resource-Use-list_head-to-link-sibling-resource/20180612-113600 > :::::: branch date: 7 hours ago > :::::: commit date: 7 hours ago > > >> kernel/resource.c:265:17-20: ERROR: invalid reference to the index variable of the iterator on line 253 > > # https://github.com/0day-ci/linux/commit/e906f15906750a86913ba2b1f08bad99129d3dfc > git remote add linux-review https://github.com/0day-ci/linux > git remote update linux-review > git checkout e906f15906750a86913ba2b1f08bad99129d3dfc > vim +265 kernel/resource.c > > ^1da177e4 Linus Torvalds 2005-04-16 247 > 5eeec0ec9 Yinghai Lu 2009-12-22 248 static void __release_child_resources(struct resource *r) > 5eeec0ec9 Yinghai Lu 2009-12-22 249 { > e906f1590 Baoquan He 2018-06-12 250 struct resource *tmp, *next; > 5eeec0ec9 Yinghai Lu 2009-12-22 251 resource_size_t size; > 5eeec0ec9 Yinghai Lu 2009-12-22 252 > e906f1590 Baoquan He 2018-06-12 @253 list_for_each_entry_safe(tmp, next, &r->child, sibling) { > 5eeec0ec9 Yinghai Lu 2009-12-22 254 tmp->parent = NULL; > e906f1590 Baoquan He 2018-06-12 255 INIT_LIST_HEAD(&tmp->sibling); list_del_init(&tmp->sibling); Thanks, Julia. Here I should use list_del_init(&op->list) to replace INIT_LIST_HEAD(&tmp->sibling). > 5eeec0ec9 Yinghai Lu 2009-12-22 256 __release_child_resources(tmp); > 5eeec0ec9 Yinghai Lu 2009-12-22 257 > 5eeec0ec9 Yinghai Lu 2009-12-22 258 printk(KERN_DEBUG "release child resource %pR\n", tmp); > 5eeec0ec9 Yinghai Lu 2009-12-22 259 /* need to restore size, and keep flags */ > 5eeec0ec9 Yinghai Lu 2009-12-22 260 size = resource_size(tmp); > 5eeec0ec9 Yinghai Lu 2009-12-22 261 tmp->start = 0; > 5eeec0ec9 Yinghai Lu 2009-12-22 262 tmp->end = size - 1; > 5eeec0ec9 Yinghai Lu 2009-12-22 263 } > e906f1590 Baoquan He 2018-06-12 264 > e906f1590 Baoquan He 2018-06-12 @265 INIT_LIST_HEAD(&tmp->child); > 5eeec0ec9 Yinghai Lu 2009-12-22 266 } > 5eeec0ec9 Yinghai Lu 2009-12-22 267 > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation