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Date: Tue, 11 Aug 2026 14:53:43 +0900
From: Greg KH <gregkh@linuxfoundation.org>
To: Xueqin Luo <luoxueqin@kylinos.cn>
Cc: heikki.krogerus@linux.intel.com, pooja.katiyar@intel.com,
	johan@kernel.org, pmenzel@molgen.mpg.de, linux-usb@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] usb: typec: ucsi: Add ACPI_COMPANION() NULL check in
 ucsi_acpi_probe
Message-ID: <2026081107-paternity-ahoy-ba14@gregkh>
References: <20260811031047.399164-1-luoxueqin@kylinos.cn>
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In-Reply-To: <20260811031047.399164-1-luoxueqin@kylinos.cn>

On Tue, Aug 11, 2026 at 11:10:47AM +0800, Xueqin Luo wrote:
> Add NULL check for ACPI_COMPANION() in ucsi_acpi_probe() to prevent
> NULL pointer dereference when driver_override matches a device without
> ACPI companion.

How can that happen?  What changed to cause that to happen?

> 
> Fixes: 1f3546ff3f0a ("usb: typec: ucsi: acpi: Check the _DEP dependencies")
> Signed-off-by: Xueqin Luo <luoxueqin@kylinos.cn>

No cc: stable?

thanks,

greg k-h