linux-kernel - Re: [patch 22/39] PCI/MSI: Move pci_alloc_irq

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Message-ID: <87k03uq161.ffs@tglx>
Date:   Wed, 16 Nov 2022 18:06:30 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        linux-pci@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Marc Zyngier <maz@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jason Gunthorpe <jgg@...lanox.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Kevin Tian <kevin.tian@...el.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Logan Gunthorpe <logang@...tatee.com>,
        Ashok Raj <ashok.raj@...el.com>, Jon Mason <jdmason@...zu.us>,
        Allen Hubbe <allenbh@...il.com>,
        "Ahmed S. Darwish" <darwi@...utronix.de>,
        Reinette Chatre <reinette.chatre@...el.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [patch 22/39] PCI/MSI: Move pci_alloc_irq_vectors() to api.c

On Wed, Nov 16 2022 at 10:22, Bjorn Helgaas wrote:
>> + * Allocate up to @max_vecs interrupt vectors on device. MSI-X irq
>
> s/irq/IRQ/
>
>> + * vector allocation has a higher precedence over plain MSI, which has a
>> + * higher precedence over legacy INTx emulation.
>> + *
>> + * Upon a successful allocation, the caller should use pci_irq_vector()
>> + * to get the Linux IRQ number to be passed to request_threaded_irq().
>> + * The driver must call pci_free_irq_vectors() on cleanup.
>> + *
>> + * Return: number of allocated vectors (which might be smaller than
>> + * @max_vecs), -ENOSPC if less than @min_vecs interrupt vectors are
>
> s/less/fewer/ (also in some previous patches, IIRC)

Will fix.