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[62.195.130.160]) by smtp.googlemail.com with ESMTPSA id 20-20020a17090601d400b006caff964e30sm4052606ejj.19.2022.03.06.09.51.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 06 Mar 2022 09:51:40 -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 25/26] usb: gadget: dummy_hcd: replace usage of rc to check if a list element was found Date: Sun, 6 Mar 2022 18:50:33 +0100 Message-Id: <20220306175034.3084609-26-jakobkoschel@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220306175034.3084609-1-jakobkoschel@gmail.com> References: <20220306175034.3084609-1-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]. This removes the need to check the rc value to determine if the break/goto was hit and can be made more obvious by checking if the variable was set within the list traversal loop. Link: https://lore.kernel.org/all/YhdfEIwI4EdtHdym@kroah.com/ Signed-off-by: Jakob Koschel --- drivers/usb/gadget/udc/dummy_hcd.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c index a2d956af42a2..f21944707707 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, *tmp; if (!_ep || !_req) return retval; @@ -763,17 +763,18 @@ 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); + list_for_each_entry(tmp, &ep->queue, queue) { + if (&tmp->req == _req) { + list_del_init(&tmp->queue); _req->status = -ECONNRESET; + req = tmp; retval = 0; break; } } spin_unlock(&dum->lock); - if (retval == 0) { + if (req) { dev_dbg(udc_dev(dum), "dequeued req %p from %s, len %d buf %p\n", req, _ep->name, _req->length, _req->buf); -- 2.25.1