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[209.132.180.67]) by mx.google.com with ESMTP id q196si1096440oic.143.2020.04.01.09.32.19; Wed, 01 Apr 2020 09:32:33 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=x768Jh3x; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388327AbgDAQbi (ORCPT + 99 others); Wed, 1 Apr 2020 12:31:38 -0400 Received: from mail.kernel.org ([198.145.29.99]:57728 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388318AbgDAQba (ORCPT ); Wed, 1 Apr 2020 12:31:30 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BA6152063A; Wed, 1 Apr 2020 16:31:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585758690; bh=VsRh+mYVWjw3vw5igl7CNXGZG/GfmVCNJmJHfY/fTPU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=x768Jh3xL9+lCVSDWisBdriW/RhABiFxOnaUNZw3fu1JNT7hAH9QmwEmnxRk8i2Pm Cb3vIgikpDcaJfSCUH9o1eCAbGrn8tBzobx8AZ0uhfNU/yIiqNzw+gQC7nB/E+qE9F +rfEFGk3WzvvzHuult0wrrYY3rT0Dc3CdMk3qNuE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alaa Hleihel , Leon Romanovsky , Dennis Dalessandro , Jason Gunthorpe , Sasha Levin Subject: [PATCH 4.4 45/91] IB/ipoib: Do not warn if IPoIB debugfs doesnt exist Date: Wed, 1 Apr 2020 18:17:41 +0200 Message-Id: <20200401161529.019824784@linuxfoundation.org> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200401161512.917494101@linuxfoundation.org> References: <20200401161512.917494101@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alaa Hleihel [ Upstream commit 14fa91e0fef8e4d6feb8b1fa2a807828e0abe815 ] netdev_wait_allrefs() could rebroadcast NETDEV_UNREGISTER event multiple times until all refs are gone, which will result in calling ipoib_delete_debug_files multiple times and printing a warning. Remove the WARN_ONCE since checks of NULL pointers before calling debugfs_remove are not needed. Fixes: 771a52584096 ("IB/IPoIB: ibX: failed to create mcg debug file") Signed-off-by: Alaa Hleihel Signed-off-by: Leon Romanovsky Reviewed-by: Dennis Dalessandro Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- drivers/infiniband/ulp/ipoib/ipoib_fs.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/infiniband/ulp/ipoib/ipoib_fs.c b/drivers/infiniband/ulp/ipoib/ipoib_fs.c index 09396bd7b02d2..63be3bcdc0e38 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_fs.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_fs.c @@ -281,8 +281,6 @@ void ipoib_delete_debug_files(struct net_device *dev) { struct ipoib_dev_priv *priv = netdev_priv(dev); - WARN_ONCE(!priv->mcg_dentry, "null mcg debug file\n"); - WARN_ONCE(!priv->path_dentry, "null path debug file\n"); debugfs_remove(priv->mcg_dentry); debugfs_remove(priv->path_dentry); priv->mcg_dentry = priv->path_dentry = NULL; -- 2.20.1