[tip: irq/msi] genirq/msi: Consolidate MSI descriptor data

tip-bot2 for Thomas Gleixner
2021-12-16T21:43:36Z

The following commit has been merged into the irq/msi branch of tip:

Commit-ID: 20c6d424cfe641659c9a025db8a8608701b27246
Gitweb: https://git.kernel.org/tip/20c6d424cfe641659c9a025db8a8608701b27246
Author: Thomas Gleixner <tglx@linutronix.de>
AuthorDate: Fri, 10 Dec 2021 23:19:12 +01:00
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitterDate: Thu, 16 Dec 2021 22:16:40 +01:00

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@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221814.350967317@linutronix.de

---
include/linux/msi.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/include/linux/msi.h b/include/linux/msi.h
index cdf0d09..ee8fe49 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -143,6 +143,7 @@ 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
@@ -163,6 +164,7 @@ 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;