From patchwork Sat May 8 00:28:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Marangi X-Patchwork-Id: 12245411 X-Patchwork-Delegate: kuba@kernel.org 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 8C4EBC43470 for ; Sat, 8 May 2021 00:29:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6F83061451 for ; Sat, 8 May 2021 00:29:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230373AbhEHAab (ORCPT ); Fri, 7 May 2021 20:30:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47662 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230306AbhEHAaY (ORCPT ); Fri, 7 May 2021 20:30:24 -0400 Received: from mail-wm1-x336.google.com (mail-wm1-x336.google.com [IPv6:2a00:1450:4864:20::336]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 39827C061761; Fri, 7 May 2021 17:29:24 -0700 (PDT) Received: by mail-wm1-x336.google.com with SMTP id o127so6101775wmo.4; Fri, 07 May 2021 17:29:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=2QCVXYSj9SYA6gAv2qNpAxSSXr1KuYSPUFWzE5IhrRM=; b=B/ZWVHYw5pZcAbi1RwkJgtU7cz+XXiVgcjOGEfJ1Ey3QmI1NI+Zq+yiHUNspTeKWFG PmcW60YIPe8sRjrC9gponmLw6jDwdXvbkaHvM144skr58JV1YQL1WTFm85Q841tRttcf zvH5QXLh+HNcjWajj34vHLCyVU1wk6IS2ioCoap9m65YfjCs6K5GoCKUBgkd9mfRSErL uVwgV+ysLeeJuyy+j9grlGjtUYzUrFJ5+PdrFYr5mT323SJ8rLmuixbSJWFXKJbSuztz DPG+nO3o1MzBxucjJbNO43LbGjQYRDgFGqPv4LaTP9S1DBK2cYdMePVS/tfVZh3zXd5b i5XA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=2QCVXYSj9SYA6gAv2qNpAxSSXr1KuYSPUFWzE5IhrRM=; b=rmxvkdzzgcxKBkBlA1/dQdpfwq3wu1dmoStG+Hz+95g3lvWWahVU4jlfrQBBW7icY9 BS8yeEOmenNHO6PAgnFwOctDEDmPl3xpB+db99FyFytBjUL558ZVlTjY5/iuI/C3TWTP Ud0fVR4C2RnKF959hrh8aJdTgtmGPO8x+K7vBC9CySaivPMRp0//Cw/SQCbr36xe72Il vM7IpZ7eSBTS7K7YkcsCDgaHhUUoGiY1ZlSHB1R3Q26OAjf9jY4cQMtC4COrtF9ZTyTN 56fk6n0LcjvEW+Wy97Xah/Be6c8wpwjzo/NAI6ULLETBUUIom4sWVi7/YMLWZmYts9RJ Oe9w== X-Gm-Message-State: AOAM533pcCX8dkMwtfPJj63pTvQ5+36s+xfKsDyWCqbph4nYqbeD5mAq jThrqw7Hl+CLPV1J7R5peAR+oM7/s30wCQ== X-Google-Smtp-Source: ABdhPJzrxkYUUuAIg33RbQF0Q8mQt4FtY97J1yWc8I1Q17ChZqVVYGZWIpYzjCzjz6IjFQJytHzq8g== X-Received: by 2002:a1c:f705:: with SMTP id v5mr22465708wmh.69.1620433762899; Fri, 07 May 2021 17:29:22 -0700 (PDT) Received: from Ansuel-xps.localdomain (93-35-189-2.ip56.fastwebnet.it. [93.35.189.2]) by smtp.googlemail.com with ESMTPSA id f4sm10967597wrz.33.2021.05.07.17.29.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 May 2021 17:29:22 -0700 (PDT) From: Ansuel Smith To: Florian Fainelli Cc: Ansuel Smith , Andrew Lunn , Vivien Didelot , Vladimir Oltean , "David S. Miller" , Jakub Kicinski , Russell King , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH net-next v4 05/28] net: dsa: qca8k: use iopoll macro for qca8k_busy_wait Date: Sat, 8 May 2021 02:28:55 +0200 Message-Id: <20210508002920.19945-5-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210508002920.19945-1-ansuelsmth@gmail.com> References: <20210508002920.19945-1-ansuelsmth@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC Use iopoll macro instead of while loop. Signed-off-by: Ansuel Smith Reviewed-by: Andrew Lunn --- drivers/net/dsa/qca8k.c | 23 +++++++++++------------ drivers/net/dsa/qca8k.h | 2 ++ 2 files changed, 13 insertions(+), 12 deletions(-) diff --git a/drivers/net/dsa/qca8k.c b/drivers/net/dsa/qca8k.c index 0b295da6c356..0bfb7ae4c128 100644 --- a/drivers/net/dsa/qca8k.c +++ b/drivers/net/dsa/qca8k.c @@ -262,21 +262,20 @@ static struct regmap_config qca8k_regmap_config = { static int qca8k_busy_wait(struct qca8k_priv *priv, u32 reg, u32 mask) { - unsigned long timeout; - - timeout = jiffies + msecs_to_jiffies(20); + u32 val; + int ret; - /* loop until the busy flag has cleared */ - do { - u32 val = qca8k_read(priv, reg); - int busy = val & mask; + ret = read_poll_timeout(qca8k_read, val, !(val & mask), + 0, QCA8K_BUSY_WAIT_TIMEOUT * USEC_PER_MSEC, false, + priv, reg); - if (!busy) - break; - cond_resched(); - } while (!time_after_eq(jiffies, timeout)); + /* Check if qca8k_read has failed for a different reason + * before returnting -ETIMEDOUT + */ + if (ret < 0 && val < 0) + return val; - return time_after_eq(jiffies, timeout); + return ret; } static void diff --git a/drivers/net/dsa/qca8k.h b/drivers/net/dsa/qca8k.h index 7ca4b93e0bb5..86c585b7ec4a 100644 --- a/drivers/net/dsa/qca8k.h +++ b/drivers/net/dsa/qca8k.h @@ -18,6 +18,8 @@ #define PHY_ID_QCA8337 0x004dd036 #define QCA8K_ID_QCA8337 0x13 +#define QCA8K_BUSY_WAIT_TIMEOUT 20 + #define QCA8K_NUM_FDB_RECORDS 2048 #define QCA8K_CPU_PORT 0