From nobody Fri Apr 3 08:34:55 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 63008ECAAA1 for ; Thu, 15 Sep 2022 20:30:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229697AbiIOUaY (ORCPT ); Thu, 15 Sep 2022 16:30:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49110 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229588AbiIOUaC (ORCPT ); Thu, 15 Sep 2022 16:30:02 -0400 Received: from mail-ed1-x52d.google.com (mail-ed1-x52d.google.com [IPv6:2a00:1450:4864:20::52d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CFCB936854 for ; Thu, 15 Sep 2022 13:29:59 -0700 (PDT) Received: by mail-ed1-x52d.google.com with SMTP id y8so21745307edc.10 for ; Thu, 15 Sep 2022 13:29:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=y9AZ5yPTroiJBvhJDLo/B5BMwojZlFfEWtDm17F1H2o=; b=gKcrXG508Y7GGiISvf6xps0gJw1MiLbJWci8tBoN0NFKZiy8RXXR15fxug2/MvscW/ aays0JHzdQ3vwG2L1+KMSarkqy+WhO8hMV9HNU2XtTkIPszTtrXid4LObO7uJhdW2A83 tseJQ6jPcvB6F9cqpLy1UFYF337eBlQ4DcatUaoSKBjs3kIxsMv2OWxQq5nUvkp+/gkW YMm1xFQFFRbcgbi/VRHqYA2FQh0DS+CWl07E+8JlaN94wi9IEa+6ctV7Yq+m1PgKrG+p SHkoRG9wvsJvpTBONXQ68u8bvDEDtOQrKu91c642tK1GpDz1OkXsLkvbx1+ikGKFEuvc ZiDw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date; bh=y9AZ5yPTroiJBvhJDLo/B5BMwojZlFfEWtDm17F1H2o=; b=4TKpChdlNVno0lvSyPrQZChtUq/NMiJVNZZipEmgxr/CD2GzEUiyFH3U6JYquzP4UK c7AtXp9zUVC3p8OJuoiO/D0HLYIeeJeYzF82f+64+WsEDQ5aL6kZ+oZwD9kNxXwqfeer NLzfKJCUhcPuc5Vc+krp/qxdWF8HItm6L5SCTgBGavsxIvDZoFsGeEah/XbNkG4kSOqv 3qRrVZYHH5Pyl4AVxpD+ZmSA4fHu/J4xHl4Upa+choSEQIJ/PFOIfCsPVkXF4U7AdQ8C GhsjIGSmSyan4L5YISlk0NKyN0y13DHSPL018QKQDZdFBpQm1WinGsCvkYbfPd3Ihpvb cBAA== X-Gm-Message-State: ACrzQf08HloSKnPTrTnKTW9qQLd/nv4+0RzhSKsxJI78K3pivY1a7s9l WGfKilZVRvWMM5VHctzg6J+s8xs62P8= X-Google-Smtp-Source: AMsMyM7JmiuWn67fftEFKkqPS8BNP2/xzQh97SQlBr9HtoIthWNMA3iryF30oADtYmNKay/PmC0nfA== X-Received: by 2002:a05:6402:28ca:b0:43b:5235:f325 with SMTP id ef10-20020a05640228ca00b0043b5235f325mr1323816edb.320.1663273798405; Thu, 15 Sep 2022 13:29:58 -0700 (PDT) Received: from localhost.localdomain (ip-217-105-46-43.ip.prioritytelecom.net. [217.105.46.43]) by smtp.gmail.com with ESMTPSA id ci25-20020a170906c35900b0072b3406e9c2sm9607295ejb.95.2022.09.15.13.29.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Sep 2022 13:29:58 -0700 (PDT) From: Nam Cao To: forest@alittletooquiet.net, gregkh@linuxfoundation.org Cc: namcaov@gmail.com, philipp.g.hortmann@gmail.com, linux-kernel@vger.kernel.org, linux-staging@lists.linux.dev Subject: [RFC PATCH 3/5] staging: vt6655: split device_alloc_rx_buf Date: Thu, 15 Sep 2022 22:29:34 +0200 Message-Id: <311eaa7dabe12d0baeb0af6f85c2b43b20b230a3.1663273218.git.namcaov@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: 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" The function device_alloc_rx_buf does 2 things: allocating rx buffer and initializing the rx descriptor's values. Split this function into two, with each does one job. This split is preparation for implementing correct out-of-memory error handling. Signed-off-by: Nam Cao --- drivers/staging/vt6655/device_main.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/= device_main.c index 79325a693857..27fe28156257 100644 --- a/drivers/staging/vt6655/device_main.c +++ b/drivers/staging/vt6655/device_main.c @@ -133,6 +133,7 @@ static int device_init_td1_ring(struct vnt_private *pri= v); static int device_rx_srv(struct vnt_private *priv, unsigned int idx); static int device_tx_srv(struct vnt_private *priv, unsigned int idx); static bool device_alloc_rx_buf(struct vnt_private *, struct vnt_rx_desc *= ); +static void device_init_rx_desc(struct vnt_private *priv, struct vnt_rx_de= sc *rd); static void device_free_rx_buf(struct vnt_private *priv, struct vnt_rx_desc *rd); static void device_init_registers(struct vnt_private *priv); @@ -615,6 +616,8 @@ static int device_init_rd0_ring(struct vnt_private *pri= v) dev_err(&priv->pcid->dev, "can not alloc rx bufs\n"); ret =3D -ENOMEM; goto err_free_rd; + } else { + device_init_rx_desc(priv, desc); } =20 desc->next =3D &priv->aRD0Ring[(i + 1) % priv->opts.rx_descs0]; @@ -661,6 +664,8 @@ static int device_init_rd1_ring(struct vnt_private *pri= v) dev_err(&priv->pcid->dev, "can not alloc rx bufs\n"); ret =3D -ENOMEM; goto err_free_rd; + } else { + device_init_rx_desc(priv, desc); } =20 desc->next =3D &priv->aRD1Ring[(i + 1) % priv->opts.rx_descs1]; @@ -838,7 +843,10 @@ static int device_rx_srv(struct vnt_private *priv, uns= igned int idx) dev_err(&priv->pcid->dev, "can not allocate rx buf\n"); break; + } else { + device_init_rx_desc(priv, rd); } + rd->rd0.owner =3D OWNED_BY_NIC; } =20 @@ -865,15 +873,17 @@ static bool device_alloc_rx_buf(struct vnt_private *p= riv, rd_info->skb =3D NULL; return false; } + return true; +} =20 +static void device_init_rx_desc(struct vnt_private *priv, struct vnt_rx_de= sc *rd) +{ *((unsigned int *)&rd->rd0) =3D 0; /* FIX cast */ =20 rd->rd0.res_count =3D cpu_to_le16(priv->rx_buf_sz); rd->rd0.owner =3D OWNED_BY_NIC; rd->rd1.req_count =3D cpu_to_le16(priv->rx_buf_sz); - rd->buff_addr =3D cpu_to_le32(rd_info->skb_dma); - - return true; + rd->buff_addr =3D cpu_to_le32(rd->rd_info->skb_dma); } =20 static void device_free_rx_buf(struct vnt_private *priv, --=20 2.25.1