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Date: Tue, 7 Apr 2026 07:58:08 +0200
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Takashi Iwai <tiwai@suse.de>
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
	Nathan Rebello <nathan.c.rebello@gmail.com>,
	Heikki Krogerus <heikki.krogerus@linux.intel.com>
Subject: Re: Spurious errors "ucsi_acpi USBC000:00: bogus connector number in
 CCI: 1" on 7.0-rc7
Message-ID: <2026040734-headfirst-tingly-e6ea@gregkh>
References: <875x63gwid.wl-tiwai@suse.de>
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In-Reply-To: <875x63gwid.wl-tiwai@suse.de>

On Tue, Apr 07, 2026 at 07:38:50AM +0200, Takashi Iwai wrote:
> Hi,
> 
> since 7.0-rc7, I'm getting a few errors
>   ucsi_acpi USBC000:00: bogus connector number in CCI: 1
> at boot of Thinkpad T14s Gen 6 AMD with a dock.
> 
> Obviously this came from the commit d2d8c17ac01a ("usb: typec: ucsi:
> validate connector number in ucsi_notify_common()"), and reverting it
> made it gone away.  I didn't notice anything practically broken either
> before or after the revert, though -- the USB devices connected on the
> dock keep working, at least.
> 
> Is this a firmware bug, or some missing piece in the code?
> Judging from the message, it means that ucsi->cap.num_connectors is 0,
> I suppose.

Ugh, what's the odds this is an off-by-one error in the firmware? :)

Nathan and Heikki, any ideas?

thanks,

greg k-h