Re: [PATCH v3] media: ipu-bridge: do not use the CVS device lookup for IVSC

[Sakari Ailus]

Hi Thorsten,

On Mon, Sep 14, 2026 at 06:32:41AM +0200, Thorsten Leemhuis wrote:
> On 9/2/26 23:15, Sergey Zagursky wrote:
> > Since commit c6b1b34b5090 ("media: pci: intel: Add CVS support for IPU
> > bridge driver") the internal camera no longer works on laptops where the
> > sensor sits behind an IVSC, for example a Dell XPS 16 9640 (IPU6,
> > INTC10CF, ov02c10):
> > 
> >   intel-ipu6 0000:00:05.0: Found supported sensor OVTI02C1:00
> >   intel-ipu6 0000:00:05.0: Connected 1 cameras
> >   ivsc_csi intel_vsc-92335fcf-3203-4472-af93-7b4453ac29da: mei-csi probed
> >       without device fwnode!
> > 
> > No sensor subdevice is registered, the media graph has no sensor entity
> > and userspace finds no camera at all.
> 
> For the record: Linus pulled this directly from the list into mainline
> yesterday after I pointed to this patch in a small regression report, as
> I had seen multiple people reporting a regression who confirmed that
> this patch fixed things for them.
> 
> Bypassing subsystems like this has obvious downsides and risks; hence,
> if that got something on the wrong track, please speak up -- or ideally
> send patches to set things straight again in mainline.
> 
> https://git.kernel.org/torvalds/c/856c562c94964a74f63c6d5f38a1509a59a2357d
> /
> 856c562c94964a ("media: ipu-bridge: do not use the CVS device lookup for
> IVSC") [v7.3-rc3]

The patch seems fine to me; it was merged to media tree 3rd of this month.

-- 
Regards,

Sakari Ailus