From mboxrd@z Thu Jan 1 00:00:00 1970 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 4D21DC433F5 for ; Wed, 9 Feb 2022 16:33:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237143AbiBIQdR (ORCPT ); Wed, 9 Feb 2022 11:33:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41716 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237082AbiBIQdH (ORCPT ); Wed, 9 Feb 2022 11:33:07 -0500 Received: from ssl.serverraum.org (ssl.serverraum.org [IPv6:2a01:4f8:151:8464::1:2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 764C5C0612BE for ; Wed, 9 Feb 2022 08:33:09 -0800 (PST) Received: from mwalle01.kontron.local. (unknown [213.135.10.150]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ssl.serverraum.org (Postfix) with ESMTPSA id 769BF223EF; Wed, 9 Feb 2022 17:33:07 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1644424387; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=HN25io342QOR5mmEV6tf4MRIjAJRxY2Op5Ab+a0YmEg=; b=YHUChgd1d04ILxJbetmIN3AGxbhcgCDNGi8TMJX6336yOh3eVZNhmEIUAp3pH2A2hAQC5S w5VHLIr2tkAPcvc28BhIM2StcUdwJPI5tduTj2DrwlTxfGc2n8C5Tu7zc3J/zI1fN621P2 xQUgE60xvbpSwNsqKDb/D57h5LHoe50= From: Michael Walle To: linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Li Yang , Ulf Hansson , Sudeep Holla , Arnd Bergmann , Dan Carpenter , Michael Walle Subject: [PATCH v2 3/7] soc: fsl: guts: embed fsl_guts_get_svr() in probe() Date: Wed, 9 Feb 2022 17:32:38 +0100 Message-Id: <20220209163242.430265-4-michael@walle.cc> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220209163242.430265-1-michael@walle.cc> References: <20220209163242.430265-1-michael@walle.cc> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Move the reading of the SVR into the probe function as fsl_guts_get_svr() is the only user of the static guts variable and this lets us drop that as well as the malloc() for this variable. Also, we can unmap the memory region after we accessed it, which will simplify error handling later. Signed-off-by: Michael Walle --- drivers/soc/fsl/guts.c | 42 +++++++++++------------------------------- 1 file changed, 11 insertions(+), 31 deletions(-) diff --git a/drivers/soc/fsl/guts.c b/drivers/soc/fsl/guts.c index 0bea43770d51..4e5675ab5f73 100644 --- a/drivers/soc/fsl/guts.c +++ b/drivers/soc/fsl/guts.c @@ -14,18 +14,12 @@ #include #include -struct guts { - struct ccsr_guts __iomem *regs; - bool little_endian; -}; - struct fsl_soc_die_attr { char *die; u32 svr; u32 mask; }; -static struct guts *guts; static struct soc_device_attribute soc_dev_attr; @@ -119,40 +113,27 @@ static const struct fsl_soc_die_attr *fsl_soc_die_match( return NULL; } -static u32 fsl_guts_get_svr(void) -{ - u32 svr = 0; - - if (!guts || !guts->regs) - return svr; - - if (guts->little_endian) - svr = ioread32(&guts->regs->svr); - else - svr = ioread32be(&guts->regs->svr); - - return svr; -} - static int fsl_guts_probe(struct platform_device *pdev) { struct device_node *root, *np = pdev->dev.of_node; static struct soc_device *soc_dev; struct device *dev = &pdev->dev; const struct fsl_soc_die_attr *soc_die; + struct ccsr_guts __iomem *regs; const char *machine = NULL; + bool little_endian; u32 svr; - /* Initialize guts */ - guts = devm_kzalloc(dev, sizeof(*guts), GFP_KERNEL); - if (!guts) - return -ENOMEM; - - guts->little_endian = of_property_read_bool(np, "little-endian"); + regs = of_iomap(np, 0); + if (IS_ERR(regs)) + return PTR_ERR(regs); - guts->regs = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(guts->regs)) - return PTR_ERR(guts->regs); + little_endian = of_property_read_bool(np, "little-endian"); + if (little_endian) + svr = ioread32(®s->svr); + else + svr = ioread32be(®s->svr); + iounmap(regs); /* Register soc device */ root = of_find_node_by_path("/"); @@ -167,7 +148,6 @@ static int fsl_guts_probe(struct platform_device *pdev) } of_node_put(root); - svr = fsl_guts_get_svr(); soc_die = fsl_soc_die_match(svr, fsl_soc_die); if (soc_die) { soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL, -- 2.30.2