linux-kernel - Re: [PATCH] media: nxp: imx8-isi: check return value of media_pad_remote_pad

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Message-ID: <20250820140135.GA6190@pendragon.ideasonboard.com>
Date: Wed, 20 Aug 2025 17:01:35 +0300
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Martin Kepplinger <martink@...teo.de>
Cc: mchehab@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
	kernel@...gutronix.de, festevam@...il.com,
	linux-media@...r.kernel.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] media: nxp: imx8-isi: check return value of
 media_pad_remote_pad_first()

Hi Martin,

On Thu, Feb 06, 2025 at 08:49:37AM +0000, Martin Kepplinger wrote:
> Am Mittwoch, dem 05.02.2025 um 17:29 +0000 schrieb Martin Kepplinger-
> Novaković:
> > media_pad_remote_pad_first() return NULL if "no enabled link has been
> > found".
> > Check for that.
> > 
> > backstory
> > =========
> > While trying to get a (Y10 grey) sensor working on imx8mp (v6.12.12
> > now and
> > I know the hardware works on an ancient nxp-kernel),
> > I tried to enable the sensor link, set formats and stream:
> 
> btw, that's roughly the
> driver: https://github.com/VC-MIPI-modules/vc_mipi_nxp/tree/master/src
> that might need additions to with recent mainline kernels. Will the
> sensor be the reason for the link not being found here?

I've submitted
https://lore.kernel.org/linux-media/20250820140021.8026-1-laurent.pinchart@ideasonboard.com,
which should fix this issue in a more generic way.

-- 
Regards,

Laurent Pinchart