From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EFD3EC43381 for ; Mon, 25 Feb 2019 21:54:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B53AE2083D for ; Mon, 25 Feb 2019 21:54:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551131698; bh=LgXnbvr+QdMVf+2BTxJE5tpleIkLWo49/W4L7Qd42Nw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=XqPw59XwHtRk6XcXJ4TY9Cb26LpNC8TQFCpJcmv7v2GC/n6/AaYNaGrsp0eSdCLEj iXelznPH7/HrCHn8hBBE/Yesb4cE5IJrHgP3uoRjT7bpVps90btx3vkm1kwP5BFC/d bTdmKiz1GaB86A3N7Y6QoN3NVyNp9BC6SZv2ev8k= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729681AbfBYVy5 (ORCPT ); Mon, 25 Feb 2019 16:54:57 -0500 Received: from mail.kernel.org ([198.145.29.99]:55920 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730752AbfBYVV6 (ORCPT ); Mon, 25 Feb 2019 16:21:58 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.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 5D5FA21852; Mon, 25 Feb 2019 21:21:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551129717; bh=LgXnbvr+QdMVf+2BTxJE5tpleIkLWo49/W4L7Qd42Nw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wyGue5Sa1PwSu1UqpywWiEKHBmsMlHfOPZsiYaAPpQs3y8s1ar12lvFa9QufyqQcK tYdj9vg5sHBGhMbOkq9mQ1Qr7OS7bYpOSFr/FEeL2I4T+MSxMFCorNKDVtaSQgvKNg HvEvfD4w3AsJqs/uM33VmRTXUDtJW7zxXmHMaP/U= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Nir Dotan , Jiri Pirko , Ido Schimmel , "David S. Miller" , Sasha Levin Subject: [PATCH 4.19 045/152] mlxsw: spectrum_acl: Add cleanup after C-TCAM update error condition Date: Mon, 25 Feb 2019 22:10:37 +0100 Message-Id: <20190225195046.847263981@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190225195043.645958524@linuxfoundation.org> References: <20190225195043.645958524@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore 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 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit ff0db43cd6c530ff944773ccf48ece55d32d0c22 ] When writing to C-TCAM, mlxsw driver uses cregion->ops->entry_insert(). In case of C-TCAM HW insertion error, the opposite action should take place. Add error handling case in which the C-TCAM region entry is removed, by calling cregion->ops->entry_remove(). Fixes: a0a777b9409f ("mlxsw: spectrum_acl: Start using A-TCAM") Signed-off-by: Nir Dotan Reviewed-by: Jiri Pirko Signed-off-by: Ido Schimmel Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- .../net/ethernet/mellanox/mlxsw/spectrum_acl_ctcam.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_ctcam.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_ctcam.c index e3c6fe8b1d406..1dcf152b28138 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_ctcam.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_ctcam.c @@ -75,7 +75,15 @@ mlxsw_sp_acl_ctcam_region_entry_insert(struct mlxsw_sp *mlxsw_sp, act_set = mlxsw_afa_block_first_set(rulei->act_block); mlxsw_reg_ptce2_flex_action_set_memcpy_to(ptce2_pl, act_set); - return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl); + err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl); + if (err) + goto err_ptce2_write; + + return 0; + +err_ptce2_write: + cregion->ops->entry_remove(cregion, centry); + return err; } static void -- 2.19.1