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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 E6FF4C4332E for ; Wed, 18 Mar 2020 21:06:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B6AA920409 for ; Wed, 18 Mar 2020 21:06:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1584565563; bh=pCcuB+pWkl42Rhm34auNydPrvo+nVOHuntQjPPkv8N0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=m9EzFbba+BGDYn/4Bt14vj4y8WW0Ub86G35j/Dhh6ACe60oFWe+b5sP+tTSk+vnGT 6D4R/8Mj0EDFP/l8AI3LJVk75V6/3Pes8D5usr/7M0bWbnmRFRpifSN63x2kdyUbJD QPE8IJl6PrpOo05+R2QbIWpue2Gnd22N+M1TqkkQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727981AbgCRUyq (ORCPT ); Wed, 18 Mar 2020 16:54:46 -0400 Received: from mail.kernel.org ([198.145.29.99]:54596 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727977AbgCRUyp (ORCPT ); Wed, 18 Mar 2020 16:54:45 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 743A22173E; Wed, 18 Mar 2020 20:54:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1584564885; bh=pCcuB+pWkl42Rhm34auNydPrvo+nVOHuntQjPPkv8N0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tHpTrIw/ohUUD58W+TZkBjTO2yP8sRN/Btro6FSLybAkW5zHuyQ4WqX9MyXm8gxCn Jzxuru+C/bGkT1FD1B6q2FPdhAIE3TGDzTH0eWldzpVPrunFmbAuIMBG20Y/Z7invw heLjSIhRJPwmnfFx1OViI7QIaw8iH269BBZOaRuo= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Julian Wiedmann , "David S . Miller" , Sasha Levin , linux-s390@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 54/73] s390/qeth: handle error when backing RX buffer Date: Wed, 18 Mar 2020 16:53:18 -0400 Message-Id: <20200318205337.16279-54-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200318205337.16279-1-sashal@kernel.org> References: <20200318205337.16279-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Julian Wiedmann [ Upstream commit 17413852804d7e86e6f0576cca32c1541817800e ] qeth_init_qdio_queues() fills the RX ring with an initial set of RX buffers. If qeth_init_input_buffer() fails to back one of the RX buffers with memory, we need to bail out and report the error. Fixes: 4a71df50047f ("qeth: new qeth device driver") Signed-off-by: Julian Wiedmann Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/s390/net/qeth_core_main.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index ac8ad951a4203..fe70e9875bde0 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -2633,12 +2633,12 @@ static int qeth_init_input_buffer(struct qeth_card *card, buf->rx_skb = netdev_alloc_skb(card->dev, QETH_RX_PULL_LEN + ETH_HLEN); if (!buf->rx_skb) - return 1; + return -ENOMEM; } pool_entry = qeth_find_free_buffer_pool_entry(card); if (!pool_entry) - return 1; + return -ENOBUFS; /* * since the buffer is accessed only from the input_tasklet @@ -2670,10 +2670,15 @@ int qeth_init_qdio_queues(struct qeth_card *card) /* inbound queue */ qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); memset(&card->rx, 0, sizeof(struct qeth_rx)); + qeth_initialize_working_pool_list(card); /*give only as many buffers to hardware as we have buffer pool entries*/ - for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) - qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); + for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; i++) { + rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); + if (rc) + return rc; + } + card->qdio.in_q->next_buf_to_init = card->qdio.in_buf_pool.buf_count - 1; rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, -- 2.20.1