linux-kernel - Re: [PATCH] soc: fsl: qe: qe_ports_ic: Consolidate chained IRQ handler install/remove

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Message-ID: <176959784390.2069162.369898481051336357.b4-ty@kernel.org>
Date: Wed, 28 Jan 2026 12:01:31 +0100
From: "Christophe Leroy (CS GROUP)" <chleroy@...nel.org>
To: qiang.zhao@....com,
	Chen Ni <nichen@...as.ac.cn>
Cc: Christophe Leroy <chleroy@...nel.org>,
	linuxppc-dev@...ts.ozlabs.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] soc: fsl: qe: qe_ports_ic: Consolidate chained IRQ handler install/remove


On Mon, 19 Jan 2026 13:57:15 +0800, Chen Ni wrote:
> The driver currently sets the handler data and the chained handler in
> two separate steps. This creates a theoretical race window where an
> interrupt could fire after the handler is set but before the data is
> assigned, leading to a NULL pointer dereference.
> 
> Replace the two calls with irq_set_chained_handler_and_data() to set
> both the handler and its data atomically under the irq_desc->lock.
> 
> [...]

Applied, thanks!

[1/1] soc: fsl: qe: qe_ports_ic: Consolidate chained IRQ handler install/remove

Best regards,
-- 
Christophe Leroy (CS GROUP) <chleroy@...nel.org>