From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C924FC433DF for ; Thu, 18 Jun 2020 02:16:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A61A82088E for ; Thu, 18 Jun 2020 02:16:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592446563; bh=H1+rkYYD5MbKVuKaLvWXX7/OscxE7Y+zr44KM1l1ZxQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=0YO+BAR1FsNUX/pR4rO9u85ywivO/FIdTAy41eVl0tSR2WarkedlUjC97OeXhNF0M LthX9guwXhTxho/t6677GJTmDCYRWyC7EL5tY30cbNderDZjAuIZDFDS8TwIjL/8VI GX2VLy0qXcAWCPgFwKXMl4Wi9UQRZRAG7UqQLcBU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733187AbgFRCQA (ORCPT ); Wed, 17 Jun 2020 22:16:00 -0400 Received: from mail.kernel.org ([198.145.29.99]:52600 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729332AbgFRBUZ (ORCPT ); Wed, 17 Jun 2020 21:20:25 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7E76520776; Thu, 18 Jun 2020 01:20:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592443225; bh=H1+rkYYD5MbKVuKaLvWXX7/OscxE7Y+zr44KM1l1ZxQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YJm5q1VFZShHWFcNJHyGeRtMiN/j4B94kFOUiZ0eIXLKHHDdIJ3+4TmbgkdBSbWmt zVE70+b/g/jLgUcD5Q7QGlanIsb4KAsv3cs+4W1lOTy3l3tdYFrb9rqRUZ/ZNsDIgs NPCZen30Imau2eGdeq5hrN9o2qZdEQkNeewzpEoA= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Nathan Chancellor , Nick Desaulniers , kbuild test robot , Felipe Balbi , Sasha Levin , linux-usb@vger.kernel.org, clang-built-linux@googlegroups.com Subject: [PATCH AUTOSEL 5.4 179/266] USB: gadget: udc: s3c2410_udc: Remove pointless NULL check in s3c2410_udc_nuke Date: Wed, 17 Jun 2020 21:15:04 -0400 Message-Id: <20200618011631.604574-179-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200618011631.604574-1-sashal@kernel.org> References: <20200618011631.604574-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Nathan Chancellor [ Upstream commit 7a0fbcf7c308920bc6116b3a5fb21c8cc5fec128 ] Clang warns: drivers/usb/gadget/udc/s3c2410_udc.c:255:11: warning: comparison of address of 'ep->queue' equal to a null pointer is always false [-Wtautological-pointer-compare] if (&ep->queue == NULL) ~~~~^~~~~ ~~~~ 1 warning generated. It is not wrong, queue is not a pointer so if ep is not NULL, the address of queue cannot be NULL. No other driver does a check like this and this check has been around since the driver was first introduced, presumably with no issues so it does not seem like this check should be something else. Just remove it. Commit afe956c577b2d ("kbuild: Enable -Wtautological-compare") exposed this but it is not the root cause of the warning. Fixes: 3fc154b6b8134 ("USB Gadget driver for Samsung s3c2410 ARM SoC") Link: https://github.com/ClangBuiltLinux/linux/issues/1004 Reviewed-by: Nick Desaulniers Reported-by: kbuild test robot Signed-off-by: Nathan Chancellor Signed-off-by: Felipe Balbi Signed-off-by: Sasha Levin --- drivers/usb/gadget/udc/s3c2410_udc.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/usb/gadget/udc/s3c2410_udc.c b/drivers/usb/gadget/udc/s3c2410_udc.c index f82208fbc249..5dcc0692b95c 100644 --- a/drivers/usb/gadget/udc/s3c2410_udc.c +++ b/drivers/usb/gadget/udc/s3c2410_udc.c @@ -251,10 +251,6 @@ static void s3c2410_udc_done(struct s3c2410_ep *ep, static void s3c2410_udc_nuke(struct s3c2410_udc *udc, struct s3c2410_ep *ep, int status) { - /* Sanity check */ - if (&ep->queue == NULL) - return; - while (!list_empty(&ep->queue)) { struct s3c2410_request *req; req = list_entry(ep->queue.next, struct s3c2410_request, -- 2.25.1