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Message-ID: <5c07c5bc-1b02-4b18-89b6-da13c16d62ab@sirena.org.uk>
Date: Mon, 1 Sep 2025 13:35:17 +0100
From: Mark Brown <broonie@...nel.org>
To: Inochi Amaoto <inochiama@...il.com>
Cc: Bjorn Helgaas <bhelgaas@...gle.com>, Marc Zyngier <maz@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Shradha Gupta <shradhagupta@...ux.microsoft.com>,
	Nathan Chancellor <nathan@...nel.org>,
	Anders Roxell <anders.roxell@...aro.org>, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, Longbin Li <looong.bin@...il.com>,
	Linux Kernel Functional Testing <lkft@...aro.org>
Subject: Re: [PATCH] PCI/MSI: Check MSI_FLAG_PCI_MSI_MASK_PARENT in
 cond_[startup|shutdown]_parent()

On Wed, Aug 27, 2025 at 02:29:07PM +0800, Inochi Amaoto 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]_templete 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.

Tested-by: Mark Brown <broonie@...nel.org>

This is causing multiple platforms to fail to boot in -next, it'd be
great if we could get it merged to fix them.

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