From patchwork Tue May 5 04:57:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Tao X-Patchwork-Id: 11528289 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 7260A92A for ; Tue, 5 May 2020 06:59:27 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5B8072064A for ; Tue, 5 May 2020 06:59:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5B8072064A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C4F606E51C; Tue, 5 May 2020 06:58:56 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from huawei.com (szxga06-in.huawei.com [45.249.212.32]) by gabe.freedesktop.org (Postfix) with ESMTPS id B112C89DB0; Tue, 5 May 2020 04:58:32 +0000 (UTC) Received: from DGGEMS405-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 7DDD594BE2A050E65587; Tue, 5 May 2020 12:58:27 +0800 (CST) Received: from huawei.com (10.67.174.156) by DGGEMS405-HUB.china.huawei.com (10.3.19.205) with Microsoft SMTP Server id 14.3.487.0; Tue, 5 May 2020 12:58:20 +0800 From: ChenTao To: , Subject: [PATCH -next] drm/radeon: fix unsigned comparison with 0 Date: Tue, 5 May 2020 12:57:37 +0800 Message-ID: <20200505045737.185143-1-chentao107@huawei.com> X-Mailer: git-send-email 2.22.0 MIME-Version: 1.0 X-Originating-IP: [10.67.174.156] X-CFilter-Loop: Reflected X-Mailman-Approved-At: Tue, 05 May 2020 06:58:49 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, chentao107@huawei.com, amd-gfx@lists.freedesktop.org, alexander.deucher@amd.com, christian.koenig@amd.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Fixes warning because pipe is unsigned long and can never be negtative vers/gpu/drm/radeon/radeon_kms.c:831:11: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits] if (pipe < 0 || pipe >= rdev->num_crtc) { drivers/gpu/drm/radeon/radeon_kms.c:857:11: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits] if (pipe < 0 || pipe >= rdev->num_crtc) { Reported-by: Hulk Robot Signed-off-by: ChenTao --- drivers/gpu/drm/radeon/radeon_kms.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c index 372962358a18..c5d1dc9618a4 100644 --- a/drivers/gpu/drm/radeon/radeon_kms.c +++ b/drivers/gpu/drm/radeon/radeon_kms.c @@ -828,7 +828,7 @@ int radeon_enable_vblank_kms(struct drm_crtc *crtc) unsigned long irqflags; int r; - if (pipe < 0 || pipe >= rdev->num_crtc) { + if (pipe >= rdev->num_crtc) { DRM_ERROR("Invalid crtc %d\n", pipe); return -EINVAL; } @@ -854,7 +854,7 @@ void radeon_disable_vblank_kms(struct drm_crtc *crtc) struct radeon_device *rdev = dev->dev_private; unsigned long irqflags; - if (pipe < 0 || pipe >= rdev->num_crtc) { + if (pipe >= rdev->num_crtc) { DRM_ERROR("Invalid crtc %d\n", pipe); return; }