linux-kernel - Re: [PATCH] irqchip/mbigen: Fix incorrect null pointer check

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Date: Tue, 13 Feb 2024 11:09:21 +0100
From: Thomas Gleixner <tglx@...utronix.de>
To: Chen Jun <chenjun102@...wei.com>, linux-kernel@...r.kernel.org
Cc: xuqiang36@...wei.com, chenjun102@...wei.com
Subject: Re: [PATCH] irqchip/mbigen: Fix incorrect null pointer check

On Mon, Jan 29 2024 at 21:00, Chen Jun wrote:

That's not about an incorrect NULL pointer check. That's about using a
function which is guaranteed to return NULL on your platform, no?

> bus_get_dev_root(&platform_bus_type) always returns NULL.

Lacks an explanation why this always returns NULL.

Thanks

        tglx