From patchwork Thu Aug 31 14:13:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 13371640 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F34BFC83F01 for ; Thu, 31 Aug 2023 14:14:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=XxyKh8Lwz0tVKZEgzCnlUdxQYYGkUUoS2qxfUwBouoQ=; b=NO0OCINuxSge+d vpugR/Ct9E85LpkWTuvDUTtxk6hNEsx57r59DNsNjuKaZ4+lcloZi347XF/Dcgn1fnQKferjP2bAQ MxWeWhHNjg6VzKwA1w8jSL/nZuJmUPX2WfXLpM5SlEoejA44PqEb+uZJd6dSDwXiZT+KWsS/bxV+m MZYUz86nBBltkFJSyQb19jcSKnj8YeCR+bgq71KwsnPb0IQBMxLBGXfTEyfsCc5ZW8P01O4OJpD+X yoRVf6Q9ZD2oTIhOd1O9n0Vtmj1MMKM8JmFgfFhLdX77JYA3HkekFEEiSBmJxvTdWV+Guh++rJ49E O+IGfiu8kCz6gI7nx4gg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qbiRC-00FQM8-0s; Thu, 31 Aug 2023 14:14:22 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qbiQw-00FQHc-12; Thu, 31 Aug 2023 14:14:07 +0000 Received: from kwepemi500008.china.huawei.com (unknown [172.30.72.56]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4Rc35J4wfMzrSQs; Thu, 31 Aug 2023 22:12:20 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemi500008.china.huawei.com (7.221.188.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Thu, 31 Aug 2023 22:14:00 +0800 From: Jinjie Ruan To: , , , , , , , , , , , , , , , , , , , , , , , CC: Subject: [PATCH net 3/3] wifi: mt76: Fix the NULL vs IS_ERR() bug for debugfs_create_dir() Date: Thu, 31 Aug 2023 22:13:47 +0800 Message-ID: <20230831141347.3166988-4-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230831141347.3166988-1-ruanjinjie@huawei.com> References: <20230831141347.3166988-1-ruanjinjie@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemi500008.china.huawei.com (7.221.188.139) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230831_071406_531836_F2381327 X-CRM114-Status: GOOD ( 10.19 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Since debugfs_create_dir() returns ERR_PTR and never return NULL, So use IS_ERR() to check it instead of checking NULL. Fixes: 17f1de56df05 ("mt76: add common code shared between multiple chipsets") Signed-off-by: Jinjie Ruan --- drivers/net/wireless/mediatek/mt76/debugfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/mediatek/mt76/debugfs.c b/drivers/net/wireless/mediatek/mt76/debugfs.c index 57fbcc83e074..d9ba700131fd 100644 --- a/drivers/net/wireless/mediatek/mt76/debugfs.c +++ b/drivers/net/wireless/mediatek/mt76/debugfs.c @@ -109,7 +109,7 @@ mt76_register_debugfs_fops(struct mt76_phy *phy, struct dentry *dir; dir = debugfs_create_dir("mt76", phy->hw->wiphy->debugfsdir); - if (!dir) + if (IS_ERR(dir)) return NULL; debugfs_create_u8("led_pin", 0600, dir, &phy->leds.pin);