From patchwork Wed May 12 14:49:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 436633 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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, 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 ED41FC43460 for ; Wed, 12 May 2021 16:22:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B1BDA61075 for ; Wed, 12 May 2021 16:22:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236687AbhELQWi (ORCPT ); Wed, 12 May 2021 12:22:38 -0400 Received: from mail.kernel.org ([198.145.29.99]:59080 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240377AbhELQR5 (ORCPT ); Wed, 12 May 2021 12:17:57 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 54D1B611AD; Wed, 12 May 2021 15:43:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620834236; bh=Y1vP5lSmmKt2b5u1aN35SL+judL54ouvL5KIg6nQ3no=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1kITUmV3MC21kwQpQAz7BysO+132XLEj2dN/dYCSc7qZnDXt89U4H7mOT+jQx9Dx1 wjT9T5PKyyzxiJkt9DduN4xqzyA4eVSe+KodZyhJA4WnJP1cYee55xZaeOKyulqXiS hoKk2/dsSiK3QH+6XhvSlaYRk5UrGJIEqPlnuOAM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Felix Fietkau , Sasha Levin Subject: [PATCH 5.11 463/601] mt76: mt7615: fix tx skb dma unmap Date: Wed, 12 May 2021 16:49:00 +0200 Message-Id: <20210512144843.087746085@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210512144827.811958675@linuxfoundation.org> References: <20210512144827.811958675@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Felix Fietkau [ Upstream commit ebee7885bb12a8fe2c2f9bac87dbd87a05b645f9 ] The first pointer in the txp needs to be unmapped as well, otherwise it will leak DMA mapping entries Fixes: 27d5c528a7ca ("mt76: fix double DMA unmap of the first buffer on 7615/7915") Signed-off-by: Felix Fietkau Signed-off-by: Sasha Levin --- drivers/net/wireless/mediatek/mt76/mt7615/mac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c index cb8bf6a29b52..34a88eab74ab 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c @@ -688,7 +688,7 @@ mt7615_txp_skb_unmap_fw(struct mt76_dev *dev, struct mt7615_fw_txp *txp) { int i; - for (i = 1; i < txp->nbuf; i++) + for (i = 0; i < txp->nbuf; i++) dma_unmap_single(dev->dev, le32_to_cpu(txp->buf[i]), le16_to_cpu(txp->len[i]), DMA_TO_DEVICE); }