linux-kernel - Re: [PATCH] PCI: aardvark: Fix masking and unmasking legacy INTx interrupts

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Message-ID: <87h7fkqfd5.wl-maz@kernel.org>
Date:   Fri, 20 Aug 2021 16:56:38 +0100
From:   Marc Zyngier <maz@...nel.org>
To:     Pali Rohár <pali@...nel.org>
Cc:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Rob Herring <robh@...nel.org>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Marek Behún <kabel@...nel.org>,
        linux-pci@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] PCI: aardvark: Fix masking and unmasking legacy INTx interrupts

On Fri, 20 Aug 2021 16:50:20 +0100,
Pali Rohár <pali@...nel.org> wrote:
> 
> irq_mask and irq_unmask callbacks need to be properly guarded by raw spin
> locks as masking/unmasking procedure needs atomic read-modify-write
> operation on hardware register.
> 
> Signed-off-by: Pali Rohár <pali@...nel.org>
> Reported-by: Marc Zyngier <maz@...nel.org>
> Cc: stable@...r.kernel.org

Acked-by: Marc Zyngier <maz@...nel.org>

	M.

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