From patchwork Thu Dec 10 19:25:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 11966097 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=-13.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 179E6C0018C for ; Thu, 10 Dec 2020 19:42:49 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BCFB823E23 for ; Thu, 10 Dec 2020 19:42:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BCFB823E23 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linutronix.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 46DAC6EB46; Thu, 10 Dec 2020 19:42:47 +0000 (UTC) Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by gabe.freedesktop.org (Postfix) with ESMTPS id CEDAE6EB37; Thu, 10 Dec 2020 19:42:38 +0000 (UTC) Message-Id: <20201210194044.364211860@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1607629357; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=KHY7zLB5K6l5lfek87988opcUU+hIDNSDHLcEFMtdbE=; b=n90PZIqvfSG+SCpScanG1Bc3HG4388BY/dyhI0EaH1D5VR7ALSrd8Di/XFloXi9hIrAe0N 2w3FtiOOS83MM1ENKBnmKIYjMGlFGK+8CqwAWA+3cn+4JTZrOFNQqz1w6/1pfc9dn229g5 RxyxMUVWrnZNU+m4ITHF184nuNhmqfYSIV87jZv/HzJ2V1oJQzYeMWo1OTElMpaTWpCUk8 uJoofHd7ipNCSNBQWtvCPnJySQsMZYd1ezWjVgB5vtUTP93BsKFGqlD/7O6EwVQkeOfVvC 5nN2twyUqXClogpFmRmB9lY9+05jwyoSoCoyIBMb5KsyzJun61fUTTAt7Pca7g== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1607629357; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=KHY7zLB5K6l5lfek87988opcUU+hIDNSDHLcEFMtdbE=; b=z1bwpMRZ9X4kcUp+yA6PiwjKs/Xplaj9Bs6jEJYC/xJl+CtwyGu1dX/ChX9QURLpfQuyav KbgY/emP2bdsj/AQ== Date: Thu, 10 Dec 2020 20:25:54 +0100 From: Thomas Gleixner To: LKML References: <20201210192536.118432146@linutronix.de> MIME-Version: 1.0 Subject: [Intel-gfx] [patch 18/30] PCI: xilinx-nwl: Use irq_data_get_irq_chip_data() X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Karthikeyan Mitran , Peter Zijlstra , Catalin Marinas , Linus Walleij , dri-devel@lists.freedesktop.org, Russell King , "James E.J. Bottomley" , netdev@vger.kernel.org, Will Deacon , Boris Ostrovsky , Rob Herring , afzal mohammed , Lorenzo Pieralisi , Dave Jiang , xen-devel@lists.xenproject.org, Leon Romanovsky , linux-rdma@vger.kernel.org, Marc Zyngier , Helge Deller , Michal Simek , Christian Borntraeger , linux-pci@vger.kernel.org, Jakub Kicinski , intel-gfx@lists.freedesktop.org, Wambui Karuga , Allen Hubbe , linux-s390@vger.kernel.org, Heiko Carstens , linux-gpio@vger.kernel.org, Stefano Stabellini , Bjorn Helgaas , Lee Jones , Chris Wilson , linux-arm-kernel@lists.infradead.org, Juergen Gross , David Airlie , linux-parisc@vger.kernel.org, Hou Zhiqiang , Tariq Toukan , Jon Mason , linux-ntb@googlegroups.com, Saeed Mahameed , "David S. Miller" Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Going through a full irq descriptor lookup instead of just using the proper helper function which provides direct access is suboptimal. In fact it _is_ wrong because the chip callback needs to get the chip data which is relevant for the chip while using the irq descriptor variant returns the irq chip data of the top level chip of a hierarchy. It does not matter in this case because the chip is the top level chip, but that doesn't make it more correct. Signed-off-by: Thomas Gleixner Cc: Lorenzo Pieralisi Cc: Rob Herring Cc: Bjorn Helgaas Cc: Michal Simek Cc: linux-pci@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Reviewed-by: Rob Herring --- drivers/pci/controller/pcie-xilinx-nwl.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) --- a/drivers/pci/controller/pcie-xilinx-nwl.c +++ b/drivers/pci/controller/pcie-xilinx-nwl.c @@ -379,13 +379,11 @@ static void nwl_pcie_msi_handler_low(str static void nwl_mask_leg_irq(struct irq_data *data) { - struct irq_desc *desc = irq_to_desc(data->irq); - struct nwl_pcie *pcie; + struct nwl_pcie *pcie = irq_data_get_irq_chip_data(data); unsigned long flags; u32 mask; u32 val; - pcie = irq_desc_get_chip_data(desc); mask = 1 << (data->hwirq - 1); raw_spin_lock_irqsave(&pcie->leg_mask_lock, flags); val = nwl_bridge_readl(pcie, MSGF_LEG_MASK); @@ -395,13 +393,11 @@ static void nwl_mask_leg_irq(struct irq_ static void nwl_unmask_leg_irq(struct irq_data *data) { - struct irq_desc *desc = irq_to_desc(data->irq); - struct nwl_pcie *pcie; + struct nwl_pcie *pcie = irq_data_get_irq_chip_data(data); unsigned long flags; u32 mask; u32 val; - pcie = irq_desc_get_chip_data(desc); mask = 1 << (data->hwirq - 1); raw_spin_lock_irqsave(&pcie->leg_mask_lock, flags); val = nwl_bridge_readl(pcie, MSGF_LEG_MASK);