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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 C7B85C43331 for ; Wed, 1 Apr 2020 16:38:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6833B20BED for ; Wed, 1 Apr 2020 16:38:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585759136; bh=9nHvcvoqUiKWJeWDOWu5BylYcXFsA0LaM6M0TJnmo6s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=pKzW81lJwHxjZ6QoN7bkRmklUtPiW092/ROth8Dfi6G+qFGSfglzedbLvN6Y/AHlM kPvuuF3AEcagHRZWPpi45FtbP0jexdsFK7CqewUhWvPQSbu0RVHim2GxIl3MjU8VOF cPM+sTPSdgZ9hvBujwcw8O29ImSx0WuOezB1Q1Xc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389138AbgDAQiy (ORCPT ); Wed, 1 Apr 2020 12:38:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:38654 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388445AbgDAQiu (ORCPT ); Wed, 1 Apr 2020 12:38:50 -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 29D0D20772; Wed, 1 Apr 2020 16:38:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585759129; bh=9nHvcvoqUiKWJeWDOWu5BylYcXFsA0LaM6M0TJnmo6s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xzLIuv9wzN4Iax1jGxfdbjBXfVOhvmmQ/kLMaXEiheZxeHHXyQNlr8i4mUmEVBYs+ 2WRt/REIbyPzI19XoZw1BIzg1jGpiH6NQWKGXnbWisLsawhe8IkfUICZhoLR7MYu8R SVc76r9KFoTsPxjxNazWI6UXSAOen1NjIsAznrGc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jisheng Zhang , "David S. Miller" Subject: [PATCH 4.9 046/102] net: mvneta: Fix the case where the last poll did not process all rx Date: Wed, 1 Apr 2020 18:17:49 +0200 Message-Id: <20200401161541.515027954@linuxfoundation.org> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200401161530.451355388@linuxfoundation.org> References: <20200401161530.451355388@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: Jisheng Zhang [ Upstream commit 065fd83e1be2e1ba0d446a257fd86a3cc7bddb51 ] For the case where the last mvneta_poll did not process all RX packets, we need to xor the pp->cause_rx_tx or port->cause_rx_tx before claculating the rx_queue. Fixes: 2dcf75e2793c ("net: mvneta: Associate RX queues with each CPU") Signed-off-by: Jisheng Zhang Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/marvell/mvneta.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -2690,10 +2690,9 @@ static int mvneta_poll(struct napi_struc /* For the case where the last mvneta_poll did not process all * RX packets */ - rx_queue = fls(((cause_rx_tx >> 8) & 0xff)); - cause_rx_tx |= port->cause_rx_tx; + rx_queue = fls(((cause_rx_tx >> 8) & 0xff)); if (rx_queue) { rx_queue = rx_queue - 1; if (pp->bm_priv)