From patchwork Sun Jun 21 15:51:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 215284 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=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 56B09C433DF for ; Sun, 21 Jun 2020 15:51:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2A61623123 for ; Sun, 21 Jun 2020 15:51:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592754706; bh=DpQ3hA1IIfKnOnalfWr6EU/rR01Glz7oWMqWKtpk26Y=; h=From:To:Cc:Subject:Date:List-ID:From; b=Vg1Exin0Y/ir3ulI26CkzMwfOmtnnHEb/y2rBPusSOHqv6gAiAXSOVjGTwJY8qErD XlIqxmWEJSKeqwkUWPGLdjxR4yeVBcRJzPCexsXeZQFSdzP695q9yMKUNATkNg5k5+ Jz13Z32V11Xqli8INsuA9ovmQSdTBFKB1A9mShDQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730011AbgFUPvo (ORCPT ); Sun, 21 Jun 2020 11:51:44 -0400 Received: from mail.kernel.org ([198.145.29.99]:36986 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729960AbgFUPvo (ORCPT ); Sun, 21 Jun 2020 11:51:44 -0400 Received: from localhost.localdomain (unknown [151.48.138.186]) (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 EB93523123; Sun, 21 Jun 2020 15:51:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592754703; bh=DpQ3hA1IIfKnOnalfWr6EU/rR01Glz7oWMqWKtpk26Y=; h=From:To:Cc:Subject:Date:From; b=TIETy4JXXazQjKhRsbERu/rVhZhrq0yJct1d1kUIEz4PRfS4pBa9AcbZfH/hYDe9+ RMyxN31/B9CjqeiaWK+pJE1BJqpngboud01TNxbc57ysaaA1DL/8m06VtWEodGQ/8/ 0MxxFWl77Rv9KiGymk2PF3DbwahxDC95lkvdqrXg= From: Lorenzo Bianconi To: kvalo@codeaurora.org Cc: linux-wireless@vger.kernel.org, nbd@nbd.name, lorenzo.bianconi@redhat.com, sean.wang@mediatek.com Subject: [PATCH wireless-drivers] mt76: mt7663u: fix memory leaks in mt7663u_probe Date: Sun, 21 Jun 2020 17:51:33 +0200 Message-Id: X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Fix the two following memory leaks in mt7663u_probe: 1- if device power-own times out, remove ieee80211 hw device. 2- if mt76u queues allocation fails, remove pending urbs. Fixes: eb99cc95c3b65 ("mt76: mt7615: introduce mt7663u support") Signed-off-by: Lorenzo Bianconi --- .../net/wireless/mediatek/mt76/mt7615/usb.c | 10 ++++----- drivers/net/wireless/mediatek/mt76/usb.c | 22 ++++++++++++++----- 2 files changed, 22 insertions(+), 10 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/usb.c b/drivers/net/wireless/mediatek/mt76/mt7615/usb.c index a50077eb24d7..18a4dd59b7e4 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/usb.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/usb.c @@ -329,25 +329,25 @@ static int mt7663u_probe(struct usb_interface *usb_intf, if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_PWR_ON, FW_STATE_PWR_ON << 1, 500)) { dev_err(dev->mt76.dev, "Timeout for power on\n"); - return -EIO; + goto error; } alloc_queues: ret = mt76u_alloc_mcu_queue(&dev->mt76); if (ret) - goto error; + goto error_free_q; ret = mt76u_alloc_queues(&dev->mt76); if (ret) - goto error; + goto error_free_q; ret = mt7663u_register_device(dev); if (ret) - goto error_freeq; + goto error_free_q; return 0; -error_freeq: +error_free_q: mt76u_queues_deinit(&dev->mt76); error: mt76u_deinit(&dev->mt76); diff --git a/drivers/net/wireless/mediatek/mt76/usb.c b/drivers/net/wireless/mediatek/mt76/usb.c index fb97ea25b4d4..2e89b0514ff6 100644 --- a/drivers/net/wireless/mediatek/mt76/usb.c +++ b/drivers/net/wireless/mediatek/mt76/usb.c @@ -1066,11 +1066,16 @@ static int mt76u_alloc_tx(struct mt76_dev *dev) static void mt76u_free_tx(struct mt76_dev *dev) { - struct mt76_queue *q; - int i, j; + int i; for (i = 0; i < IEEE80211_NUM_ACS; i++) { + struct mt76_queue *q; + int j; + q = dev->q_tx[i].q; + if (!q) + continue; + for (j = 0; j < q->ndesc; j++) usb_free_urb(q->entry[j].urb); } @@ -1078,17 +1083,22 @@ static void mt76u_free_tx(struct mt76_dev *dev) void mt76u_stop_tx(struct mt76_dev *dev) { - struct mt76_queue_entry entry; - struct mt76_queue *q; - int i, j, ret; + int ret; ret = wait_event_timeout(dev->tx_wait, !mt76_has_tx_pending(&dev->phy), HZ / 5); if (!ret) { + struct mt76_queue_entry entry; + struct mt76_queue *q; + int i, j; + dev_err(dev->dev, "timed out waiting for pending tx\n"); for (i = 0; i < IEEE80211_NUM_ACS; i++) { q = dev->q_tx[i].q; + if (!q) + continue; + for (j = 0; j < q->ndesc; j++) usb_kill_urb(q->entry[j].urb); } @@ -1100,6 +1110,8 @@ void mt76u_stop_tx(struct mt76_dev *dev) */ for (i = 0; i < IEEE80211_NUM_ACS; i++) { q = dev->q_tx[i].q; + if (!q) + continue; /* Assure we are in sync with killed tasklet. */ spin_lock_bh(&q->lock);