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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 B26C1C43381 for ; Thu, 28 Feb 2019 15:29:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7BA4720C01 for ; Thu, 28 Feb 2019 15:29:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551367783; bh=dTjbH+x6F2EbsL8pWq8JJ5oYGAeCuOV6L4kY/YnfzaA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=bMdrF+GPQR3KFBSvKieUfFW58UVJh2pWHMKvJbklJJ92pChOF6PIfGPSOZNPaJ0lM ctcREsW+whS3JizsfzjyeWyYXS2WP8q9u8efbfOqLrQf6nd6qGDakOZ4cTK7BwaaSD NgMC25dLreZCwH9bt9QXSzb1uUGWsaexH5t4ITRQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389021AbfB1P3m (ORCPT ); Thu, 28 Feb 2019 10:29:42 -0500 Received: from mail.kernel.org ([198.145.29.99]:43148 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731658AbfB1PKX (ORCPT ); Thu, 28 Feb 2019 10:10:23 -0500 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 92DB7218B0; Thu, 28 Feb 2019 15:10:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551366623; bh=dTjbH+x6F2EbsL8pWq8JJ5oYGAeCuOV6L4kY/YnfzaA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AkY/H9/WMsbwf8xhA1mW4r7Sejf60AN4WP2cvru3IeQh1FGi4TKIxmIpEtxKdds1G YvClwpWS/C5ZeiJ91B2URRtJPLbohfr79pw/BCcX4r68H1X5tgP4mQDUe+OsLGQ5F4 L4ksxoSdln+PVKuKe4ZbDljbltmuOjEUdMnY+xUs= 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 4.20 61/81] s390/qeth: release cmd buffer in error paths Date: Thu, 28 Feb 2019 10:07:53 -0500 Message-Id: <20190228150813.10256-61-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190228150813.10256-1-sashal@kernel.org> References: <20190228150813.10256-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Julian Wiedmann [ Upstream commit 5065b2dd3e5f9247a6c9d67974bc0472bf561b9d ] Whenever we fail before/while starting an IO, make sure to release the IO buffer. Usually qeth_irq() would do this for us, but if the IO doesn't even start we obviously won't get an interrupt for it either. Signed-off-by: Julian Wiedmann Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/s390/net/qeth_core_main.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 0c9a5250dd93f..623ddda5d2ba8 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -568,6 +568,7 @@ static int __qeth_issue_next_read(struct qeth_card *card) QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n", rc, CARD_DEVID(card)); atomic_set(&channel->irq_pending, 0); + qeth_release_buffer(channel, iob); card->read_or_write_problem = 1; qeth_schedule_recovery(card); wake_up(&card->wait_q); @@ -1129,6 +1130,8 @@ static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, rc = qeth_get_problem(card, cdev, irb); if (rc) { card->read_or_write_problem = 1; + if (iob) + qeth_release_buffer(iob->channel, iob); qeth_clear_ipacmd_list(card); qeth_schedule_recovery(card); goto out; @@ -1811,6 +1814,7 @@ static int qeth_idx_activate_get_answer(struct qeth_card *card, QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); atomic_set(&channel->irq_pending, 0); + qeth_release_buffer(channel, iob); wake_up(&card->wait_q); return rc; } @@ -1880,6 +1884,7 @@ static int qeth_idx_activate_channel(struct qeth_card *card, rc); QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); atomic_set(&channel->irq_pending, 0); + qeth_release_buffer(channel, iob); wake_up(&card->wait_q); return rc; } @@ -2060,6 +2065,7 @@ int qeth_send_control_data(struct qeth_card *card, int len, } reply = qeth_alloc_reply(card); if (!reply) { + qeth_release_buffer(channel, iob); return -ENOMEM; } reply->callback = reply_cb; -- 2.19.1