From nobody Tue Apr 7 14:54:00 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 576BFECAAD4 for ; Fri, 26 Aug 2022 10:38:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245065AbiHZKis (ORCPT ); Fri, 26 Aug 2022 06:38:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53050 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242864AbiHZKiq (ORCPT ); Fri, 26 Aug 2022 06:38:46 -0400 Received: from mail-ej1-x62f.google.com (mail-ej1-x62f.google.com [IPv6:2a00:1450:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BF97DD5993 for ; Fri, 26 Aug 2022 03:38:45 -0700 (PDT) Received: by mail-ej1-x62f.google.com with SMTP id gb36so2333986ejc.10 for ; Fri, 26 Aug 2022 03:38:45 -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=3qJESbYubFMD5Pl68KvSnzTCaMJv8nnmIuPcfcljgGA=; b=BMmK213iwKHTtGXLQ+Jl9K09jzii1LmixoAATTZVHd+coxUxdRdtFvp9ClSm1aSKdJ 62FSzx13a3JjWCpYpqpf44VhZaP0YC7oqManoiNWzkiNV04JORvBOJEZ3g5NGhzIk5uG gQymPuBiPBu7mPxLDJlb92EFW+wrXOvTNWSGhT3V90+N2Gl4QZJBRPz1OOYQfiT+mLjV v0/vi/dg8oIlkPrItuWnRf7w/pkqGD4PBivg0+nFR6b6tvMJMlwziO70oVAtT9GaUpTY y9sUVePr0iZtQnuRal8qx43lHZez0zeHFIa0+9YnsRk59aIOmlB/rDoRaXCxE5B5QJrR /WRw== 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=3qJESbYubFMD5Pl68KvSnzTCaMJv8nnmIuPcfcljgGA=; b=Bwy6rko/2S/fILrz46uP0yQhvb/mpShabroffn/qG/6eKm4C1myHdratc80Gku7Ox5 Mtol8GpJerS302YDHBKi6AEOwwytn0/iTo5KTtzQJFAVBDyhGHv+ODCD17sydx4zSD/8 apHTTWE091fvpVVdLm4PW5/VDV0VF4pEbR9xXs+JcRluF4P+2EJ/tl/gbv2GwjSXWWEH AsQolYRg1E8ODmTEIWs15No1BOleTE4OrROYU6oFd7yFoJTO9p4P0Bxd8U3GNm5WsnQh qAx6OITJ1/Jb9+JUvp0Vae+6wXR4g/baB+dehFPvr7hOV9GHAFtHw3c1y025voTHdhWA Ig9g== X-Gm-Message-State: ACgBeo3JAwN2KL5QIz6e3sKi+TWTvG79iCcK2lvOH1v0RJnPgy99Q5f6 o3UWiZ4d2H7SLSwrWR3kIJS9RVGSVh1coA== X-Google-Smtp-Source: AA6agR5pldxWvZDxGPC+I83/e0f/jDzZikBhLKDonJc1XwGfwWhsm/M6BldQSsz8ky2NHve1hI09ng== X-Received: by 2002:a17:906:6d98:b0:715:76eb:9e33 with SMTP id h24-20020a1709066d9800b0071576eb9e33mr5054178ejt.729.1661510324338; Fri, 26 Aug 2022 03:38:44 -0700 (PDT) Received: from lb02065.fritz.box ([2001:9e8:140d:2300:3a17:fa67:2b0b:b905]) by smtp.gmail.com with ESMTPSA id ot11-20020a170906cccb00b0073dcc912fa3sm707923ejb.202.2022.08.26.03.38.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 Aug 2022 03:38:43 -0700 (PDT) From: Jack Wang To: alexander.shishkin@linux.intel.com Cc: christophe.jaillet@wanadoo.fr, linux-kernel@vger.kernel.org Subject: [PATCHv2] intel_th: Fix dma_map_sg error check Date: Fri, 26 Aug 2022 12:38:43 +0200 Message-Id: <20220826103843.83582-1-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, return -EIO in case of error. Cc: Alexander Shishkin Cc: christophe.jaillet@wanadoo.fr 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 | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/= msu.c index 6c8215a47a60..472e1a4bafc1 100644 --- a/drivers/hwtracing/intel_th/msu.c +++ b/drivers/hwtracing/intel_th/msu.c @@ -931,8 +931,10 @@ static int msc_buffer_contig_alloc(struct msc *msc, un= signed 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) { + ret =3D -EIO; goto err_free_pages; + } =20 msc->nr_pages =3D nr_pages; msc->base =3D page_address(page); --=20 2.34.1