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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2F0D2C433F5 for ; Fri, 10 Dec 2021 22:21:50 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4J9lkN4YqPz3clb for ; Sat, 11 Dec 2021 09:21:48 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=linutronix.de header.i=@linutronix.de header.a=rsa-sha256 header.s=2020 header.b=pE4rQ2ru; dkim=fail reason="signature verification failed" header.d=linutronix.de header.i=@linutronix.de header.a=ed25519-sha256 header.s=2020e header.b=4a4+C7Wh; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linutronix.de (client-ip=193.142.43.55; helo=galois.linutronix.de; envelope-from=tglx@linutronix.de; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=linutronix.de header.i=@linutronix.de header.a=rsa-sha256 header.s=2020 header.b=pE4rQ2ru; dkim=pass header.d=linutronix.de header.i=@linutronix.de header.a=ed25519-sha256 header.s=2020e header.b=4a4+C7Wh; dkim-atps=neutral Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4J9lg203c3z2xtW for ; Sat, 11 Dec 2021 09:18:53 +1100 (AEDT) Message-ID: <20211210221813.434156196@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1639174730; 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: references:references; bh=VrU+cUwVNt/tRlW4lw+bzWjrRhpWxr0n5kAnta20rq4=; b=pE4rQ2ru1rC+MOxwgCFck9hIsKI0LjZICNGNwEw8ze9/meweY1qANt4dgwIHKfQOPC1beg yPBns7caG7PjSlQkEoMvTCi/DDid/5ijo+pcU/3ZLIE1LS+qQRJIeuxZj2Mi/GYsUgFxDG UfE4buF12pfMJCkH4E7kXOGXF3Tdxoadhmimlb4Oqaa6At4sxsqGTcRd4XwvSUVolW7xT/ BZ6l4WzdOdHBFzRU8fuHCGeKVTvU3fpMB68bg/XbArySIyUaHyjLg/eiywsouAZhDcRfnk 7ETqReSwtzm9CpcynGCRQWFvda5xRxitOgtngCsHnX2u5kMmZ6hOfaZO1ylegg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1639174730; 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: references:references; bh=VrU+cUwVNt/tRlW4lw+bzWjrRhpWxr0n5kAnta20rq4=; b=4a4+C7WhuYdeuyTtWKdNyTdvLDhhfziSubOZ+5mUXlzgk+OuqIM6rjcLPfL3/GtWFOnIFc gcXKQZiyuUQutAAA== From: Thomas Gleixner To: LKML Subject: [patch V3 04/35] genirq/msi: Use PCI device property References: <20211210221642.869015045@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Date: Fri, 10 Dec 2021 23:18:49 +0100 (CET) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Nishanth Menon , Mark Rutland , Stuart Yoder , Will Deacon , Ashok Raj , Joerg Roedel , Jassi Brar , Sinan Kaya , iommu@lists.linux-foundation.org, Peter Ujfalusi , Bjorn Helgaas , linux-arm-kernel@lists.infradead.org, Jason Gunthorpe , linux-pci@vger.kernel.org, xen-devel@lists.xenproject.org, Kevin Tian , Arnd Bergmann , Robin Murphy , Alex Williamson , Cedric Le Goater , Santosh Shilimkar , Bjorn Helgaas , Megha Dey , Laurentiu Tudor , Juergen Gross , Tero Kristo , Greg Kroah-Hartman , Vinod Koul , Marc Zygnier , dmaengine@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Thomas Gleixner to determine whether this is MSI or MSIX instead of consulting MSI descriptors. Signed-off-by: Thomas Gleixner --- V2: Use PCI device property - Jason --- kernel/irq/msi.c | 17 ++--------------- 1 file changed, 2 insertions(+), 15 deletions(-) --- a/kernel/irq/msi.c +++ b/kernel/irq/msi.c @@ -77,21 +77,8 @@ EXPORT_SYMBOL_GPL(get_cached_msi_msg); static ssize_t msi_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct msi_desc *entry; - bool is_msix = false; - unsigned long irq; - int retval; - - retval = kstrtoul(attr->attr.name, 10, &irq); - if (retval) - return retval; - - entry = irq_get_msi_desc(irq); - if (!entry) - return -ENODEV; - - if (dev_is_pci(dev)) - is_msix = entry->pci.msi_attrib.is_msix; + /* MSI vs. MSIX is per device not per interrupt */ + bool is_msix = dev_is_pci(dev) ? to_pci_dev(dev)->msix_enabled : false; return sysfs_emit(buf, "%s\n", is_msix ? "msix" : "msi"); }