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Message-ID: <20211126230524.778704986@linutronix.de>
Date:   Sat, 27 Nov 2021 02:21:39 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     Bjorn Helgaas <helgaas@...nel.org>, Marc Zygnier <maz@...nel.org>,
        Alex Williamson <alex.williamson@...hat.com>,
        Kevin Tian <kevin.tian@...el.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Megha Dey <megha.dey@...el.com>,
        Ashok Raj <ashok.raj@...el.com>, linux-pci@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Santosh Shilimkar <ssantosh@...nel.org>,
        iommu@...ts.linux-foundation.org, dmaengine@...r.kernel.org,
        Stuart Yoder <stuyoder@...il.com>,
        Laurentiu Tudor <laurentiu.tudor@....com>,
        Nishanth Menon <nm@...com>, Tero Kristo <kristo@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, x86@...nel.org,
        Vinod Koul <vkoul@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Will Deacon <will@...nel.org>, Sinan Kaya <okaya@...nel.org>
Subject: [patch 14/37] genirq/msi: Consolidate MSI descriptor data

All non PCI/MSI usage variants have data structures in struct msi_desc with
only one member: xxx_index. PCI/MSI has a entry_nr member.

Add a common msi_index member to struct msi_desc so all implementations can
share it which allows further consolidation.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 include/linux/msi.h |    2 ++
 1 file changed, 2 insertions(+)

--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -142,6 +142,7 @@ struct ti_sci_inta_msi_desc {
  *			address or data changes
  * @write_msi_msg_data:	Data parameter for the callback.
  *
+ * @msi_index:	Index of the msi descriptor
  * @pci:	[PCI]	    PCI speficic msi descriptor data
  * @platform:	[platform]  Platform device specific msi descriptor data
  * @fsl_mc:	[fsl-mc]    FSL MC device specific msi descriptor data
@@ -162,6 +163,7 @@ struct msi_desc {
 	void (*write_msi_msg)(struct msi_desc *entry, void *data);
 	void *write_msi_msg_data;
 
+	u16				msi_index;
 	union {
 		struct pci_msi_desc		pci;
 		struct platform_msi_desc	platform;

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