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 49F4BC433FE for ; Fri, 11 Nov 2022 13:58:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234070AbiKKN6N (ORCPT ); Fri, 11 Nov 2022 08:58:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59580 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234061AbiKKN5B (ORCPT ); Fri, 11 Nov 2022 08:57:01 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6172085460; Fri, 11 Nov 2022 05:55:16 -0800 (PST) Message-ID: <20221111122015.749446904@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1668174915; 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=Ih0SYkcSYwketpyalRo87sRSG9j843DJDGdjQI9dFbE=; b=VRE7MeUlB+cCM6U0cjMzbGN3WDIQa4HFZh7046HSLFSqzZZR+YCs/CdvdLqq6MWSGZekns H/dGx3if2rOBFQbosYmjXgs8H6R5QzfT4Wx9HUiK3bRvDeCd3Y2/aKwsZmLgcB2RLXpdOs oVkPfJgyTtJEli4A4Tu93d2MK7EdOeIEH+Y0BZTm7D17rn3qKvvsqjvAZrJgzd7vVJM1e9 1Z0lHU2nKsnKqYI3bqO1EqiYcRaa2k7iEq2ImYpiFsxIhbdqk1xQCU1UqPFsjb5fWestXq 04JcUcgHgsR+8pKz5h9KEtGpLzv4hoUBfbtq/MJ4c2jMIoOztbmH2Ysjx6MsoQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1668174915; 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=Ih0SYkcSYwketpyalRo87sRSG9j843DJDGdjQI9dFbE=; b=3NdsAzuzZxu0dT7r41E3zPAtIf/iHCijDpTpmlZOnjI92Lbu6pLEazC2N//W9XAeQ4XAqW 7LzccZ7efW9feDBw== From: Thomas Gleixner To: LKML Cc: x86@kernel.org, Joerg Roedel , Will Deacon , linux-pci@vger.kernel.org, Bjorn Helgaas , Lorenzo Pieralisi , Marc Zyngier , Greg Kroah-Hartman , Jason Gunthorpe , Dave Jiang , Alex Williamson , Kevin Tian , Dan Williams , Logan Gunthorpe , Ashok Raj , Jon Mason , Allen Hubbe , Michael Ellerman , Christophe Leroy , linuxppc-dev@lists.ozlabs.org, "Ahmed S. Darwish" , Reinette Chatre Subject: [patch 37/39] PCI/MSI: Remove redundant msi_check() callback References: <20221111120501.026511281@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Date: Fri, 11 Nov 2022 14:55:14 +0100 (CET) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org All these sanity checks are now done _before_ any allocation work happens. No point in doing it twice. Signed-off-by: Thomas Gleixner --- drivers/pci/msi/irqdomain.c | 48 -------------------------------------------- 1 file changed, 48 deletions(-) --- a/drivers/pci/msi/irqdomain.c +++ b/drivers/pci/msi/irqdomain.c @@ -64,51 +64,6 @@ static irq_hw_number_t pci_msi_domain_ca (pci_domain_nr(dev->bus) & 0xFFFFFFFF) << 27; } -static inline bool pci_msi_desc_is_multi_msi(struct msi_desc *desc) -{ - return !desc->pci.msi_attrib.is_msix && desc->nvec_used > 1; -} - -/** - * pci_msi_domain_check_cap - Verify that @domain supports the capabilities - * for @dev - * @domain: The interrupt domain to check - * @info: The domain info for verification - * @dev: The device to check - * - * Returns: - * 0 if the functionality is supported - * 1 if Multi MSI is requested, but the domain does not support it - * -ENOTSUPP otherwise - */ -static int pci_msi_domain_check_cap(struct irq_domain *domain, - struct msi_domain_info *info, - struct device *dev) -{ - struct msi_desc *desc = msi_first_desc(dev, MSI_DESC_ALL); - - /* Special handling to support __pci_enable_msi_range() */ - if (pci_msi_desc_is_multi_msi(desc) && - !(info->flags & MSI_FLAG_MULTI_PCI_MSI)) - return 1; - - if (desc->pci.msi_attrib.is_msix) { - if (!(info->flags & MSI_FLAG_PCI_MSIX)) - return -ENOTSUPP; - - if (info->flags & MSI_FLAG_MSIX_CONTIGUOUS) { - unsigned int idx = 0; - - /* Check for gaps in the entry indices */ - msi_for_each_desc(desc, dev, MSI_DESC_ALL) { - if (desc->msi_index != idx++) - return -ENOTSUPP; - } - } - } - return 0; -} - static void pci_msi_domain_set_desc(msi_alloc_info_t *arg, struct msi_desc *desc) { @@ -118,7 +73,6 @@ static void pci_msi_domain_set_desc(msi_ static struct msi_domain_ops pci_msi_domain_ops_default = { .set_desc = pci_msi_domain_set_desc, - .msi_check = pci_msi_domain_check_cap, }; static void pci_msi_domain_update_dom_ops(struct msi_domain_info *info) @@ -130,8 +84,6 @@ static void pci_msi_domain_update_dom_op } else { if (ops->set_desc == NULL) ops->set_desc = pci_msi_domain_set_desc; - if (ops->msi_check == NULL) - ops->msi_check = pci_msi_domain_check_cap; } }