linux-kernel - Re: [PATCH v2] PCI/MSI: Check MSI_FLAG_PCI_MSI_MASK_PARENT in cond_[startup|shutdown]

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Message-ID: <CADYN=9K7317Pte=dp7Q7HOhfLMMDAfRGcmaWCfvOtCLZ00uC+g@mail.gmail.com>
Date: Mon, 1 Sep 2025 15:30:55 +0200
From: Anders Roxell <anders.roxell@...aro.org>
To: Inochi Amaoto <inochiama@...il.com>
Cc: Bjorn Helgaas <bhelgaas@...gle.com>, Thomas Gleixner <tglx@...utronix.de>, 
	Marc Zyngier <maz@...nel.org>, Lorenzo Pieralisi <lpieralisi@...nel.org>, 
	Shradha Gupta <shradhagupta@...ux.microsoft.com>, Chen Wang <unicorn_wang@...look.com>, 
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Yixun Lan <dlan@...too.org>, Longbin Li <looong.bin@...il.com>, 
	Linux Kernel Functional Testing <lkft@...aro.org>, Nathan Chancellor <nathan@...nel.org>, Wei Fang <wei.fang@....com>, 
	Jon Hunter <jonathanh@...dia.com>, Stephen Rothwell <sfr@...b.auug.org.au>
Subject: Re: [PATCH v2] PCI/MSI: Check MSI_FLAG_PCI_MSI_MASK_PARENT in cond_[startup|shutdown]_parent()

On Thu, 28 Aug 2025 at 01:10, Inochi Amaoto <inochiama@...il.com> wrote:
>
> For msi controller that only supports MSI_FLAG_PCI_MSI_MASK_PARENT,
> the newly added callback irq_startup() and irq_shutdown() for
> pci_msi[x]_template will not unmask/mask the interrupt when startup/
> shutdown the interrupt. This will prevent the interrupt from being
> enabled/disabled normally.
>
> Add the missing check for MSI_FLAG_PCI_MSI_MASK_PARENT in the
> cond_[startup|shutdown]_parent(). So the interrupt can be normally
> unmasked/masked if it does not support MSI_FLAG_PCI_MSI_MASK_PARENT.
>
> Fixes: 54f45a30c0d0 ("PCI/MSI: Add startup/shutdown for per device domains")
> Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>
> Closes: https://lore.kernel.org/regressions/aK4O7Hl8NCVEMznB@monster/
> Reported-by: Nathan Chancellor <nathan@...nel.org>
> Closes: https://lore.kernel.org/regressions/20250826220959.GA4119563@ax162/
> Reported-by: Wei Fang <wei.fang@....com>
> Closes: https://lore.kernel.org/all/20250827093911.1218640-1-wei.fang@nxp.com/
> Signed-off-by: Inochi Amaoto <inochiama@...il.com>
> Tested-by: Nathan Chancellor <nathan@...nel.org>
> Tested-by: Linux Kernel Functional Testing <lkft@...aro.org>
> Tested-by: Jon Hunter <jonathanh@...dia.com>
> Acked-by: Bjorn Helgaas <bhelgaas@...gle.com>

Any updates on this?  It pretty much breaks testing on linux-next for ARM.

Cheers,
Anders