linux-kernel - Re: [PATCH] media: mali-c55: Fix NULL dev stream alert for tpg sub-device

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Message-ID: <aWYhGQcDVRDTyvxj@kekkonen.localdomain>
Date: Tue, 13 Jan 2026 12:40:25 +0200
From: Sakari Ailus <sakari.ailus@...ux.intel.com>
To: Jacopo Mondi <jacopo.mondi@...asonboard.com>
Cc: "jempty.liang" <imntjempty@....com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	dan.scally@...asonboard.com, mchehab@...nel.org,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] media: mali-c55: Fix NULL dev stream alert for tpg
 sub-device

Hi Jacopo,

On Tue, Jan 13, 2026 at 09:55:10AM +0100, Jacopo Mondi wrote:
> I wonder if v4l2_device_register_subdev() shouldn't WARN or if return
> an error if sd->dev is not initialized. Laurent, Sakari: opinions ?

I might even return an error but I wonder what would break. Perhaps indeed
could start with a warning?

-- 
Sakari Ailus