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[62.195.130.160]) by smtp.googlemail.com with ESMTPSA id rv11-20020a17090710cb00b006d5c0cd5e0dsm6085044ejb.82.2022.03.08.09.19.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Mar 2022 09:19:38 -0800 (PST) From: Jakob Koschel To: Greg Kroah-Hartman Cc: Jakob Koschel , linux-kernel@vger.kernel.org, Linus Torvalds , Felipe Balbi , Joel Stanley , Andrew Jeffery , Nicolas Ferre , Alexandre Belloni , Claudiu Beznea , Cristian Birsan , Al Cooper , Li Yang , Vladimir Zapolskiy , Daniel Mack , Haojian Zhuang , Robert Jarzmik , Krzysztof Kozlowski , Alim Akhtar , Thierry Reding , Jonathan Hunter , Michal Simek , linux-usb@vger.kernel.org (open list:USB GADGET/PERIPHERAL SUBSYSTEM), Mike Rapoport , "Brian Johannesmeyer" , Cristiano Giuffrida , "Bos, H.J." Subject: [PATCH v2 25/26] usb: gadget: dummy_hcd: remove usage of list iterator past the loop body Date: Tue, 8 Mar 2022 18:18:17 +0100 Message-Id: <20220308171818.384491-26-jakobkoschel@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220308171818.384491-1-jakobkoschel@gmail.com> References: <20220308171818.384491-1-jakobkoschel@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org To move the list iterator variable into the list_for_each_entry_*() macro in the future it should be avoided to use the list iterator variable after the loop body. To *never* use the list iterator variable after the loop it was concluded to use a separate iterator variable [1]. Link: https://lore.kernel.org/all/YhdfEIwI4EdtHdym@kroah.com/ Signed-off-by: Jakob Koschel --- drivers/usb/gadget/udc/dummy_hcd.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c index a2d956af42a2..35aec8e7fc73 100644 --- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -751,7 +751,7 @@ static int dummy_dequeue(struct usb_ep *_ep, struct usb_request *_req) struct dummy *dum; int retval = -EINVAL; unsigned long flags; - struct dummy_request *req = NULL; + struct dummy_request *req = NULL, *iter; if (!_ep || !_req) return retval; @@ -763,13 +763,14 @@ static int dummy_dequeue(struct usb_ep *_ep, struct usb_request *_req) local_irq_save(flags); spin_lock(&dum->lock); - list_for_each_entry(req, &ep->queue, queue) { - if (&req->req == _req) { - list_del_init(&req->queue); - _req->status = -ECONNRESET; - retval = 0; - break; - } + list_for_each_entry(iter, &ep->queue, queue) { + if (&iter->req != _req) + continue; + list_del_init(&iter->queue); + _req->status = -ECONNRESET; + req = iter; + retval = 0; + break; } spin_unlock(&dum->lock); -- 2.25.1