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Re: [patch V2 27/36] genirq/msi: Provide interface to retrieve Linux interrupt number
- To: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
- From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
- Date: Tue, 7 Dec 2021 08:51:53 +0100
- Cc: LKML <linux-kernel@xxxxxxxxxxxxxxx>, Bjorn Helgaas <helgaas@xxxxxxxxxx>, Marc Zygnier <maz@xxxxxxxxxx>, Alex Williamson <alex.williamson@xxxxxxxxxx>, Kevin Tian <kevin.tian@xxxxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxxxx>, Megha Dey <megha.dey@xxxxxxxxx>, Ashok Raj <ashok.raj@xxxxxxxxx>, linux-pci@xxxxxxxxxxxxxxx, Cedric Le Goater <clg@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Juergen Gross <jgross@xxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Santosh Shilimkar <ssantosh@xxxxxxxxxx>, iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, dmaengine@xxxxxxxxxxxxxxx, Stuart Yoder <stuyoder@xxxxxxxxx>, Laurentiu Tudor <laurentiu.tudor@xxxxxxx>, Nishanth Menon <nm@xxxxxx>, Tero Kristo <kristo@xxxxxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, Vinod Koul <vkoul@xxxxxxxxxx>, Mark Rutland <mark.rutland@xxxxxxx>, Robin Murphy <robin.murphy@xxxxxxx>, Sinan Kaya <okaya@xxxxxxxxxx>
- Delivery-date: Tue, 07 Dec 2021 07:52:05 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Mon, Dec 06, 2021 at 11:39:39PM +0100, Thomas Gleixner wrote:
> This allows drivers to retrieve the Linux interrupt number instead of
> fiddling with MSI descriptors.
>
> msi_get_virq() returns the Linux interrupt number or 0 in case that there
> is no entry for the given MSI index.
>
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
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