From patchwork Tue Dec 18 13:25:08 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yue Haibing X-Patchwork-Id: 10735653 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1C9841399 for ; Tue, 18 Dec 2018 13:26:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0BC0E286FF for ; Tue, 18 Dec 2018 13:26:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id F3E0A2874E; Tue, 18 Dec 2018 13:26:12 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C9B6228EBA for ; Tue, 18 Dec 2018 13:26:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726446AbeLRN0L (ORCPT ); Tue, 18 Dec 2018 08:26:11 -0500 Received: from szxga06-in.huawei.com ([45.249.212.32]:59649 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726582AbeLRN0L (ORCPT ); Tue, 18 Dec 2018 08:26:11 -0500 Received: from DGGEMS412-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 9EBE56931B678; Tue, 18 Dec 2018 21:26:07 +0800 (CST) Received: from localhost (10.177.31.96) by DGGEMS412-HUB.china.huawei.com (10.3.19.212) with Microsoft SMTP Server id 14.3.408.0; Tue, 18 Dec 2018 21:26:01 +0800 From: YueHaibing To: , , , CC: , , , YueHaibing Subject: [PATCH v2 -next] staging: fbtft: use strcmp() instead of strncmp() for Date: Tue, 18 Dec 2018 21:25:08 +0800 Message-ID: <20181218132508.18672-1-yuehaibing@huawei.com> X-Mailer: git-send-email 2.10.2.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.177.31.96] X-CFilter-Loop: Reflected Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP strncmp() stops comparing when either the end of one of the first two arguments is reached or when 'n' characters have been compared, whichever comes first.That means that strncmp(s1, s2, n) is equivalent to strcmp(s1, s2) if n exceeds the length of s1 or the length of s2. This patch avoids that the following warning is reported by smatch: drivers/staging/fbtft/fbtft_device.c:1458 fbtft_device_init() error: strncmp() '"list"' too small (5 vs 32) Signed-off-by: YueHaibing --- v2: fix patch title --- drivers/staging/fbtft/fbtft_device.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/fbtft/fbtft_device.c b/drivers/staging/fbtft/fbtft_device.c index 50e97da..0e995028 100644 --- a/drivers/staging/fbtft/fbtft_device.c +++ b/drivers/staging/fbtft/fbtft_device.c @@ -1455,7 +1455,7 @@ static int __init fbtft_device_init(void) } /* name=list lists all supported displays */ - if (strncmp(name, "list", FBTFT_GPIO_NAME_SIZE) == 0) { + if (strcmp(name, "list") == 0) { pr_info("Supported displays:\n"); for (i = 0; i < ARRAY_SIZE(displays); i++)