From patchwork Wed Jan 22 01:32:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: chenzhou X-Patchwork-Id: 11344837 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id ACFEB1398 for ; Wed, 22 Jan 2020 01:37:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 86E8421734 for ; Wed, 22 Jan 2020 01:37:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728901AbgAVBhp (ORCPT ); Tue, 21 Jan 2020 20:37:45 -0500 Received: from szxga05-in.huawei.com ([45.249.212.191]:9231 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728899AbgAVBhp (ORCPT ); Tue, 21 Jan 2020 20:37:45 -0500 Received: from DGGEMS403-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 94515A7B96BBE26574CC; Wed, 22 Jan 2020 09:37:42 +0800 (CST) Received: from localhost.localdomain.localdomain (10.175.113.25) by DGGEMS403-HUB.china.huawei.com (10.3.19.203) with Microsoft SMTP Server id 14.3.439.0; Wed, 22 Jan 2020 09:37:33 +0800 From: Chen Zhou To: , , , , , CC: , , , , , Subject: [PATCH -next v2] backlight: qcom-wled: fix unsigned comparison to zero Date: Wed, 22 Jan 2020 09:32:40 +0800 Message-ID: <20200122013240.132861-1-chenzhou10@huawei.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-Originating-IP: [10.175.113.25] X-CFilter-Loop: Reflected Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org Fixes coccicheck warning: ./drivers/video/backlight/qcom-wled.c:1104:5-15: WARNING: Unsigned expression compared with zero: string_len > 0 The unsigned variable string_len is assigned a return value from the call to of_property_count_elems_of_size(), which may return negative error code. Fixes: 775d2ffb4af6 ("backlight: qcom-wled: Restructure the driver for WLED3") Signed-off-by: Chen Zhou Reviewed-by: Bjorn Andersson Reviewed-by: Daniel Thompson Reviewed-by: Kiran Gunda --- changes in v2: - fix commit message description. --- drivers/video/backlight/qcom-wled.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/video/backlight/qcom-wled.c b/drivers/video/backlight/qcom-wled.c index d46052d..3d276b3 100644 --- a/drivers/video/backlight/qcom-wled.c +++ b/drivers/video/backlight/qcom-wled.c @@ -956,8 +956,8 @@ static int wled_configure(struct wled *wled, int version) struct wled_config *cfg = &wled->cfg; struct device *dev = wled->dev; const __be32 *prop_addr; - u32 size, val, c, string_len; - int rc, i, j; + u32 size, val, c; + int rc, i, j, string_len; const struct wled_u32_opts *u32_opts = NULL; const struct wled_u32_opts wled3_opts[] = {