From nobody Fri Dec 19 06:16:26 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1496806599466595.5603509308361; Tue, 6 Jun 2017 20:36:39 -0700 (PDT) Received: from localhost ([::1]:41092 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dIRlu-0006qR-4s for importer@patchew.org; Tue, 06 Jun 2017 23:36:38 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43071) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dIRja-0005Qw-Ol for qemu-devel@nongnu.org; Tue, 06 Jun 2017 23:34:16 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dIRjY-0000wc-FJ for qemu-devel@nongnu.org; Tue, 06 Jun 2017 23:34:14 -0400 Received: from mx1.redhat.com ([209.132.183.28]:33278) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dIRjY-0000wS-91 for qemu-devel@nongnu.org; Tue, 06 Jun 2017 23:34:12 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 4EE228553D; Wed, 7 Jun 2017 03:34:11 +0000 (UTC) Received: from jason-ThinkPad-T450s.redhat.com (ovpn-12-37.pek2.redhat.com [10.72.12.37]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9109862926; Wed, 7 Jun 2017 03:34:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 4EE228553D Authentication-Results: ext-mx04.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx04.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=jasowang@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 4EE228553D From: Jason Wang To: qemu-devel@nongnu.org, peter.maydell@linaro.org Date: Wed, 7 Jun 2017 11:34:03 +0800 Message-Id: <1496806444-27910-2-git-send-email-jasowang@redhat.com> In-Reply-To: <1496806444-27910-1-git-send-email-jasowang@redhat.com> References: <1496806444-27910-1-git-send-email-jasowang@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Wed, 07 Jun 2017 03:34:11 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 1/2] net/rocker: Cleanup the useless return value check X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mao Zhongyi , Jason Wang Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Mao Zhongyi None of pci_dma_read()'s callers check the return value except rocker. There is no need to check it because it always return 0. So the check work is useless. Remove it entirely. Suggested-by: Markus Armbruster Signed-off-by: Mao Zhongyi Signed-off-by: Jason Wang --- hw/net/rocker/rocker.c | 9 +++------ hw/net/rocker/rocker_desc.c | 4 +--- 2 files changed, 4 insertions(+), 9 deletions(-) diff --git a/hw/net/rocker/rocker.c b/hw/net/rocker/rocker.c index 6e70fdd..4f0f6d7 100644 --- a/hw/net/rocker/rocker.c +++ b/hw/net/rocker/rocker.c @@ -244,11 +244,9 @@ static int tx_consume(Rocker *r, DescInfo *info) goto err_no_mem; } =20 - if (pci_dma_read(dev, frag_addr, iov[iovcnt].iov_base, - iov[iovcnt].iov_len)) { - err =3D -ROCKER_ENXIO; - goto err_bad_io; - } + pci_dma_read(dev, frag_addr, iov[iovcnt].iov_base, + iov[iovcnt].iov_len); + iovcnt++; } =20 @@ -261,7 +259,6 @@ static int tx_consume(Rocker *r, DescInfo *info) err =3D fp_port_eg(r->fp_port[port], iov, iovcnt); =20 err_too_many_frags: -err_bad_io: err_no_mem: err_bad_attr: for (i =3D 0; i < ROCKER_TX_FRAGS_MAX; i++) { diff --git a/hw/net/rocker/rocker_desc.c b/hw/net/rocker/rocker_desc.c index ac02797..6184c40 100644 --- a/hw/net/rocker/rocker_desc.c +++ b/hw/net/rocker/rocker_desc.c @@ -69,9 +69,7 @@ char *desc_get_buf(DescInfo *info, bool read_only) return NULL; } =20 - if (pci_dma_read(dev, le64_to_cpu(info->desc.buf_addr), info->buf, siz= e)) { - return NULL; - } + pci_dma_read(dev, le64_to_cpu(info->desc.buf_addr), info->buf, size); =20 return info->buf; } --=20 2.7.4