From patchwork Thu Dec 10 19:25:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 11966093 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 2B340C2BBD5 for ; Thu, 10 Dec 2020 19:42:44 +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 CB18F23DC4 for ; Thu, 10 Dec 2020 19:42:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CB18F23DC4 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 B88D76EB2E; Thu, 10 Dec 2020 19:42:41 +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 11E8D6EB3B; Thu, 10 Dec 2020 19:42:40 +0000 (UTC) Message-Id: <20201210194044.473308721@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1607629358; 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=hb66G/YKxZssYUpIlaqnSR4ZW1k+vqs7JSWYZ8olni4=; b=JDGcEIf6xGhVDkvwWeMQLx9FUu/IsKss78ihAlKadMjAIf3dHANCzucDD5C2rHnEBhKkDC fs0LpWbG65iC+gn0dqp5B//hOUr0DzpNnSBFKb88Vue5ngozd1tGLn7CtzLKEI29imO25z joiUdDjr1d2lfyigu/UfV0ehuoSmHFo9AhA/FqDn1vazpBLlgf2ND1DS3dxniHAdDnilk3 1qIkGuqztzebcid1bBRJTHx9CoWTI1/9XLZXX10DwpIeYbsmtua3l8q5FWiIGABqtq0mdG +jGGNyapUz+w2HLUzMDsdOexP4c9y0H7CnIR6EVRiH9/1y/HRKjopWTfNI7hPQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1607629358; 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=hb66G/YKxZssYUpIlaqnSR4ZW1k+vqs7JSWYZ8olni4=; b=Fyn3b5Uer8Bt9xBrcUD7/wbs4Zq09nDfu7V/W/qeQGG6ZMTLCbkszqx6GueqYSkgtweAWi EEbLWcn1hOF4e1Aw== Date: Thu, 10 Dec 2020 20:25:55 +0100 From: Thomas Gleixner To: LKML References: <20201210192536.118432146@linutronix.de> MIME-Version: 1.0 Subject: [Intel-gfx] [patch 19/30] PCI: mobiveil: 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, Chris Wilson , "James E.J. Bottomley" , Saeed Mahameed , netdev@vger.kernel.org, Will Deacon , Michal Simek , Rob Herring , afzal mohammed , Lorenzo Pieralisi , Dave Jiang , xen-devel@lists.xenproject.org, Leon Romanovsky , linux-rdma@vger.kernel.org, Marc Zyngier , Helge Deller , Russell King , Christian Borntraeger , linux-pci@vger.kernel.org, Jakub Kicinski , Heiko Carstens , Wambui Karuga , Allen Hubbe , Juergen Gross , linux-s390@vger.kernel.org, Hou Zhiqiang , linux-gpio@vger.kernel.org, Stefano Stabellini , Bjorn Helgaas , Lee Jones , linux-arm-kernel@lists.infradead.org, Boris Ostrovsky , David Airlie , linux-parisc@vger.kernel.org, Tariq Toukan , Jon Mason , linux-ntb@googlegroups.com, intel-gfx@lists.freedesktop.org, "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: Karthikeyan Mitran Cc: Hou Zhiqiang Cc: Lorenzo Pieralisi Cc: Rob Herring Cc: Bjorn Helgaas Cc: linux-pci@vger.kernel.org Reviewed-by: Rob Herring --- drivers/pci/controller/mobiveil/pcie-mobiveil-host.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) --- a/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c +++ b/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c @@ -306,13 +306,11 @@ int mobiveil_host_init(struct mobiveil_p static void mobiveil_mask_intx_irq(struct irq_data *data) { - struct irq_desc *desc = irq_to_desc(data->irq); - struct mobiveil_pcie *pcie; + struct mobiveil_pcie *pcie = irq_data_get_irq_chip_data(data); struct mobiveil_root_port *rp; unsigned long flags; u32 mask, shifted_val; - pcie = irq_desc_get_chip_data(desc); rp = &pcie->rp; mask = 1 << ((data->hwirq + PAB_INTX_START) - 1); raw_spin_lock_irqsave(&rp->intx_mask_lock, flags); @@ -324,13 +322,11 @@ static void mobiveil_mask_intx_irq(struc static void mobiveil_unmask_intx_irq(struct irq_data *data) { - struct irq_desc *desc = irq_to_desc(data->irq); - struct mobiveil_pcie *pcie; + struct mobiveil_pcie *pcie = irq_data_get_irq_chip_data(data); struct mobiveil_root_port *rp; unsigned long flags; u32 shifted_val, mask; - pcie = irq_desc_get_chip_data(desc); rp = &pcie->rp; mask = 1 << ((data->hwirq + PAB_INTX_START) - 1); raw_spin_lock_irqsave(&rp->intx_mask_lock, flags);