linux-kernel - [patch V2 00/10] genirq/msi: Spring cleaning

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Message-ID: <20250313130212.450198939@linutronix.de>
Date: Thu, 13 Mar 2025 14:03:36 +0100 (CET)
From: Thomas Gleixner <tglx@...utronix.de>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Marc Zyngier <maz@...nel.org>,
 Peter Zijlstra <peterz@...radead.org>,
 Nishanth Menon <nm@...com>,
 Jonathan Cameron <Jonathan.Cameron@...wei.com>,
 Dhruva Gole <d-gole@...com>,
 Tero Kristo <kristo@...nel.org>,
 Santosh Shilimkar <ssantosh@...nel.org>,
 Logan Gunthorpe <logang@...tatee.com>,
 Dave Jiang <dave.jiang@...el.com>,
 Jon Mason <jdmason@...zu.us>,
 Allen Hubbe <allenbh@...il.com>,
 ntb@...ts.linux.dev,
 Bjorn Helgaas <bhelgaas@...gle.com>,
 linux-pci@...r.kernel.org,
 Michael Kelley <mhklinux@...look.com>,
 Wei Liu <wei.liu@...nel.org>,
 Haiyang Zhang <haiyangz@...rosoft.com>,
 linux-hyperv@...r.kernel.org,
 Wei Huang <wei.huang2@....com>,
 Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
 "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
 "Martin K. Petersen" <martin.petersen@...cle.com>,
 linux-scsi@...r.kernel.org,
 Jonathan Cameron <Jonathan.Cameron@...ei.com>
Subject: [patch V2 00/10] genirq/msi: Spring cleaning

This is version 2 of the cleanup work. The previous version can be found
here:

   https://lore.kernel.org/all/20250309083453.900516105@linutronix.de

While converting the MSI descriptor locking to a lock guard() I stumbled
over various abuse of MSI descriptors (again).

The following series cleans up the offending code and converts the MSI
descriptor locking over to lock guards.

Changes vs. V1:

   - Introduce retain_ptr() to allow using __free() when the allocation is
     consumed by a called function (on success) and therefore no_free_ptr()
     can't be used.

   - Rework the PCI/MSI changes to avoid gotos in guard sections

   - Drop patch 1 as it's already applied

   - Collect Reviewed/Tested/Acked-by tags where appropriate

Patches 3,4,6-10 are unmodifed.

The series applies on:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/msi

and is available from git:

    git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git irq/msi

Thanks,

	tglx
---
 drivers/ntb/msi.c                   |   22 +---
 drivers/pci/controller/pci-hyperv.c |   14 ---
 drivers/pci/msi/api.c               |    6 -
 drivers/pci/msi/msi.c               |  168 ++++++++++++++++++++++--------------
 drivers/pci/pci.h                   |    9 +
 drivers/pci/tph.c                   |   44 ---------
 drivers/soc/ti/ti_sci_inta_msi.c    |   10 --
 drivers/ufs/host/ufs-qcom.c         |   75 ++++++++--------
 include/linux/cleanup.h             |   17 +++
 include/linux/irqdomain.h           |    2 
 include/linux/msi.h                 |    7 +
 kernel/irq/msi.c                    |  125 ++++++++++----------------
 12 files changed, 247 insertions(+), 252 deletions(-)