From nobody Tue Apr 7 14:54:38 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D29B8ECAAD2 for ; Fri, 26 Aug 2022 10:17:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245581AbiHZKRW (ORCPT ); Fri, 26 Aug 2022 06:17:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46806 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343749AbiHZKP2 (ORCPT ); Fri, 26 Aug 2022 06:15:28 -0400 Received: from mail-wr1-x431.google.com (mail-wr1-x431.google.com [IPv6:2a00:1450:4864:20::431]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B8441B14D5 for ; Fri, 26 Aug 2022 03:15:26 -0700 (PDT) Received: by mail-wr1-x431.google.com with SMTP id bu22so897319wrb.3 for ; Fri, 26 Aug 2022 03:15:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ionos.com; s=google; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc; bh=Rz7Ri8U5aOCKdVvdIijp7X/sK+Kj5rWcJ2yernN5/UU=; b=gPM3TcVxoDHwYqK27/aPW5GKL7yoXrHcGW40ghqodySkT/N482ydnrzme+qFCnl73g uM8ed9i+2UaCZbh4NTfu4SSIorIixGRhxNbUY7Yfe81VHpce18w542bEI7Kg+FcWsz+m OiKdk+h7G/YjBfmgeds9f3qYjFgW1Ebjx9kL1HcDPyNrzxPfDyV+e8ixGSOaTKx9Tnt5 gy+i0OWEwzCYj7hXMxVqTCjiRA4ny+FS/7916/pa6C0ECzaCrpbJwWWJpt09TinZuyWY FQ5ScuDMB6sMFrykEtuAna4pF1C/jTFunEszH4OLKPTcGOL5k+2XviTAMrxho7un3kDi nN4g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc; bh=Rz7Ri8U5aOCKdVvdIijp7X/sK+Kj5rWcJ2yernN5/UU=; b=6CJSwVWPRpIudgLYyvJcAQN/fP7Y/DzwerH3efb5va0u6BADg5aPFWz94I2KMoeP8C dc7ZhLpEwGH5eDNP50/vyNM4j0HxExri9AXs459dvv08G3GaxJXLOOlgjeaNtHdIcOD+ z1MDKoxFX9T8qu9BMG9gIG5/88puc5Pfehkg8gd5KKlLmPfEvIkiO9Sq86koGWIVNjQz 4AJhiM9FWpD+VZP6PRscLAIv8tepBCNrk4Qckj1nzWSP1/b7K0+bkVred/ym3TBXiaaV SZBGMjgTlnrQH2Gw10ezxE76qOeCNqJkHXrKwOs8d0384xSGrJP7mNLgydAWK26DaVyr Oghg== X-Gm-Message-State: ACgBeo30ldCr8hFmr5IF1XVzOvRYqJeG6RLZn3tEnzqKw6l+UK7yzQvS 1yFcfx8poqe/06aIslSS1Mjbta9TqoZFhg== X-Google-Smtp-Source: AA6agR57O1cwi+qphGSKGGSIT5z0TrEh1gdt6SbE8yynmslGWt2m198gFohyG8mk5TSEwcXU7IDXow== X-Received: by 2002:adf:f2ca:0:b0:225:4800:d201 with SMTP id d10-20020adff2ca000000b002254800d201mr4502643wrp.187.1661508925071; Fri, 26 Aug 2022 03:15:25 -0700 (PDT) Received: from lb02065.fritz.box ([2001:9e8:140d:2300:3a17:fa67:2b0b:b905]) by smtp.gmail.com with ESMTPSA id e14-20020a5d500e000000b0021f0c0c62d1sm1505882wrt.13.2022.08.26.03.15.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 Aug 2022 03:15:24 -0700 (PDT) From: Jack Wang To: alexander.shishkin@linux.intel.com Cc: linux-kernel@vger.kernel.org Subject: [PATCH] intel_th: Fix dma_map_sg error check Date: Fri, 26 Aug 2022 12:15:23 +0200 Message-Id: <20220826101523.79502-1-jinpu.wang@ionos.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" dma_map_sg return 0 on error. Cc: Alexander Shishkin Cc: linux-kernel@vger.kernel.org Fixes: 4e0eaf239fb3 ("intel_th: msu: Fix single mode with IOMMU") Signed-off-by: Jack Wang --- drivers/hwtracing/intel_th/msu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/= msu.c index 6c8215a47a60..b49237d56a60 100644 --- a/drivers/hwtracing/intel_th/msu.c +++ b/drivers/hwtracing/intel_th/msu.c @@ -931,7 +931,7 @@ static int msc_buffer_contig_alloc(struct msc *msc, uns= igned long size) =20 ret =3D dma_map_sg(msc_dev(msc)->parent->parent, msc->single_sgt.sgl, 1, DMA_FROM_DEVICE); - if (ret < 0) + if (!ret) goto err_free_pages; =20 msc->nr_pages =3D nr_pages; --=20 2.34.1