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From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Bjorn Helgaas <helgaas@kernel.org>, Marc Zygnier <maz@kernel.org>,
	Alex Williamson <alex.williamson@redhat.com>,
	Kevin Tian <kevin.tian@intel.com>,
	Jason Gunthorpe <jgg@nvidia.com>, Megha Dey <megha.dey@intel.com>,
	Ashok Raj <ashok.raj@intel.com>,
	linux-pci@vger.kernel.org,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Santosh Shilimkar <ssantosh@kernel.org>,
	iommu@lists.linux-foundation.org, dmaengine@vger.kernel.org,
	Stuart Yoder <stuyoder@gmail.com>,
	Laurentiu Tudor <laurentiu.tudor@nxp.com>,
	Nishanth Menon <nm@ti.com>, Tero Kristo <kristo@kernel.org>,
	linux-arm-kernel@lists.infradead.org, x86@kernel.org,
	Vinod Koul <vkoul@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Will Deacon <will@kernel.org>, Sinan Kaya <okaya@kernel.org>
Subject: [patch 30/37] PCI/MSI: Simplify pci_irq_get_affinity()
Date: Sat, 27 Nov 2021 02:22:04 +0100 (CET)	[thread overview]
Message-ID: <20211126230525.717286966@linutronix.de> (raw)
Message-ID: <20211127012204.xMjpEBvduu_tCNnfCN0Pd-eUM__p6UDJG7Us9-lA9fQ@z> (raw)
In-Reply-To: 20211126224100.303046749@linutronix.de

Replace open coded MSI descriptor chasing and use the proper accessor
functions instead.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 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);
 


  parent reply	other threads:[~2021-11-27  1:28 UTC|newest]

Thread overview: 97+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-27  1:20 [patch 00/37] genirq/msi, PCI/MSI: Spring cleaning - Part 2 Thomas Gleixner
2021-11-27  1:20 ` [patch 01/37] device: Move MSI related data into a struct Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27 12:11   ` Greg Kroah-Hartman
2021-11-27  1:20 ` [patch 02/37] device: Add device::msi_data pointer and struct msi_device_data Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27 12:12   ` Greg Kroah-Hartman
2021-11-28  0:14   ` Jason Gunthorpe
2021-11-28 19:09     ` Thomas Gleixner
2021-11-27  1:20 ` [patch 03/37] PCI/MSI: Allocate MSI device data on first use Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 05/37] platform-msi: " Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 06/37] bus: fsl-mc-msi: " Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 07/37] soc: ti: ti_sci_inta_msi: " Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 08/37] genirq/msi: Provide msi_device_populate/destroy_sysfs() Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-30 11:53   ` Jonathan Cameron
2021-11-27  1:20 ` [patch 09/37] PCI/MSI: Let the irq code handle sysfs groups Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 10/37] platform-msi: Let the core " Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 11/37] genirq/msi: Remove the original sysfs interfaces Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 12/37] platform-msi: Rename functions and clarify comments Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 13/37] platform-msi: Store platform private data pointer in msi_device_data Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 14/37] genirq/msi: Consolidate MSI descriptor data Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 15/37] platform-msi: Use msi_desc::msi_index Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 16/37] bus: fsl-mc-msi: " Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 17/37] soc: ti: ti_sci_inta_msi: " Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 18/37] PCI/MSI: " Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 19/37] genirq/msi: Add msi_device_data::properties Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 20/37] PCI/MSI: Store properties in device::msi::data Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 21/37] x86/pci/XEN: Use device MSI properties Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 22/37] x86/apic/msi: " Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 23/37] genirq/msi: " Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 24/37] powerpc/cell/axon_msi: Use MSI device properties Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 25/37] powerpc/pseries/msi: " Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 26/37] PCI/MSI: Provide MSI_FLAG_MSIX_CONTIGUOUS Thomas Gleixner
2021-11-27  1:21   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 27/37] powerpc/pseries/msi: Let core code check for contiguous entries Thomas Gleixner
2021-11-27  1:22   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 28/37] genirq/msi: Provide interface to retrieve Linux interrupt number Thomas Gleixner
2021-11-27  1:22   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 29/37] PCI/MSI: Use __msi_get_virq() in pci_get_vector() Thomas Gleixner
2021-11-27  1:22   ` Thomas Gleixner
2021-11-28 19:37   ` Marc Zyngier
2021-11-28 21:00     ` Thomas Gleixner
2021-11-27  1:20 ` Thomas Gleixner [this message]
2021-11-27  1:22   ` [patch 30/37] PCI/MSI: Simplify pci_irq_get_affinity() Thomas Gleixner
2021-11-27  1:20 ` [patch 31/37] dmaengine: mv_xor_v2: Get rid of msi_desc abuse Thomas Gleixner
2021-11-27  1:22   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 32/37] perf/smmuv3: Use msi_get_virq() Thomas Gleixner
2021-11-27  1:22   ` Thomas Gleixner
2021-11-27  1:20 ` [patch 33/37] iommu/arm-smmu-v3: " Thomas Gleixner
2021-11-27  1:22   ` Thomas Gleixner
2021-11-29 10:55   ` Will Deacon
2021-11-29 12:52     ` Thomas Gleixner
2021-11-29 12:58       ` Thomas Gleixner
2021-11-29 13:13     ` Robin Murphy
2021-11-29 14:42       ` Thomas Gleixner
2021-11-29 14:54         ` Robin Murphy
2021-11-30  9:36           ` Will Deacon
2021-11-30 12:30             ` Thomas Gleixner
2021-11-29 13:25   ` Robin Murphy
2021-11-27  1:21 ` [patch 34/37] mailbox: bcm-flexrm-mailbox: Rework MSI interrupt handling Thomas Gleixner
2021-11-27  1:22   ` Thomas Gleixner
2021-11-27  1:21 ` [patch 35/37] bus: fsl-mc: fsl-mc-allocator: Rework MSI handling Thomas Gleixner
2021-11-27  1:22   ` Thomas Gleixner
2021-11-27  1:21 ` [patch 36/37] soc: ti: ti_sci_inta_msi: Get rid of ti_sci_inta_msi_get_virq() Thomas Gleixner
2021-11-27  1:22   ` Thomas Gleixner
2021-11-27  1:21 ` [patch 37/37] dmaengine: qcom_hidma: Cleanup MSI handling Thomas Gleixner
2021-11-27  1:22   ` Thomas Gleixner
2021-11-29 19:56   ` Sinan Kaya
2021-11-27  1:21 ` [patch 00/37] genirq/msi, PCI/MSI: Spring cleaning - Part 2 Thomas Gleixner
2021-11-27  1:21 ` [patch 04/37] PCI/MSI: Use lock from msi_device_data Thomas Gleixner
2021-11-27  1:20   ` Thomas Gleixner
2021-11-27 12:13   ` Greg Kroah-Hartman
2021-11-27 12:17 ` [patch 00/37] genirq/msi, PCI/MSI: Spring cleaning - Part 2 Greg Kroah-Hartman
2021-11-28  0:39 ` Jason Gunthorpe
2021-11-28 20:27   ` Thomas Gleixner

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