From patchwork Sat Nov 27 01:20:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 12641931 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 9DE9BC4167E for ; Sat, 27 Nov 2021 01:25:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348981AbhK0B2W (ORCPT ); Fri, 26 Nov 2021 20:28:22 -0500 Received: from Galois.linutronix.de ([193.142.43.55]:35300 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345708AbhK0B0S (ORCPT ); Fri, 26 Nov 2021 20:26:18 -0500 Message-ID: <20211126230525.717286966@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1637976055; 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=lGMoGQDOkZmCsZ8FLKTWCWUkNfIx3jWYUDFtnIf5/U4=; b=n4VA8TjjZsXj/YLR8uW0WeKOoBPJSySmhK2nKGm0r3Wh2p8sTvTpHR5gWBRHDThXy+K+dz 6AiylyRSUXFPZE/Fj9Yu8hzexzr/5Vw2yAztW+xHXq/pg//du8RtZ7ybxjZR9dd4IuIcGB 4D4E2iaVOqQX0CJ9oXuAhH/CVRrwMhVZVs3EmaM0+PRy5adQKlMMIt8usJp8vrLp+5Cbms gPu4H/k1GfGipgFgV/AnmLnou76HJA9/K5tVVRdabCP22CHIUF0OIf2i0+dwhOgxSHMhyl /ra+9LpdeRyQrOdJsnXGdZ2nkJkpwi8CtVDani6kjk+GeBlx1cer13punBJygw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1637976055; 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=lGMoGQDOkZmCsZ8FLKTWCWUkNfIx3jWYUDFtnIf5/U4=; b=HXPwrcAtVW7VEWtyIJ2EKcLCItORCI9ek4u23jGiih1EjCqWeRibc3sijpeTPMTbglZvdM 3Vk2GrKWo1Ocw7BQ== From: Thomas Gleixner To: LKML Cc: Bjorn Helgaas , Marc Zygnier , Alex Williamson , Kevin Tian , Jason Gunthorpe , Megha Dey , Ashok Raj , linux-pci@vger.kernel.org, Greg Kroah-Hartman , Santosh Shilimkar , iommu@lists.linux-foundation.org, dmaengine@vger.kernel.org, Stuart Yoder , Laurentiu Tudor , Nishanth Menon , Tero Kristo , linux-arm-kernel@lists.infradead.org, x86@kernel.org, Vinod Koul , Mark Rutland , Will Deacon , Sinan Kaya Subject: [patch 30/37] PCI/MSI: Simplify pci_irq_get_affinity() References: <20211126224100.303046749@linutronix.de> MIME-Version: 1.0 Date: Sat, 27 Nov 2021 02:20:54 +0100 (CET) Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org Replace open coded MSI descriptor chasing and use the proper accessor functions instead. Signed-off-by: Thomas Gleixner --- drivers/pci/msi/msi.c | 26 ++++++++++---------------- 1 file changed, 10 insertions(+), 16 deletions(-) --- a/drivers/pci/msi/msi.c +++ b/drivers/pci/msi/msi.c @@ -1040,26 +1040,20 @@ EXPORT_SYMBOL(pci_irq_vector); */ const struct cpumask *pci_irq_get_affinity(struct pci_dev *dev, int nr) { - if (dev->msix_enabled) { - struct msi_desc *entry; + int irq = pci_irq_vector(dev, nr); + struct msi_desc *desc; - for_each_pci_msi_entry(entry, dev) { - if (entry->msi_index == nr) - return &entry->affinity->mask; - } - WARN_ON_ONCE(1); + if (WARN_ON_ONCE(irq <= 0)) return NULL; - } else if (dev->msi_enabled) { - struct msi_desc *entry = first_pci_msi_entry(dev); - if (WARN_ON_ONCE(!entry || !entry->affinity || - nr >= entry->nvec_used)) - return NULL; - - return &entry->affinity[nr].mask; - } else { + desc = irq_get_msi_desc(irq); + /* Non-MSI does not have the information handy */ + if (!desc) return cpu_possible_mask; - } + + if (WARN_ON_ONCE(!desc->affinity)) + return NULL; + return &desc->affinity[nr].mask; } EXPORT_SYMBOL(pci_irq_get_affinity);