linux-kernel - Re: [PATCH 0/2] media: intel-ipu3: allow the media graph to be used even if a subdev fails

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Date:   Mon, 17 Sep 2018 18:21:46 +0200
From:   Javier Martinez Canillas <javierm@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     Tian Shu Qiu <tian.shu.qiu@...el.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Jian Xu Zheng <jian.xu.zheng@...el.com>,
        Yong Zhi <yong.zhi@...el.com>,
        Hans Verkuil <hverkuil@...all.nl>,
        Bingbu Cao <bingbu.cao@...el.com>, linux-media@...r.kernel.org
Subject: Re: [PATCH 0/2] media: intel-ipu3: allow the media graph to be used
 even if a subdev fails

Hi Tianshu and Sakari,

On 9/4/18 1:30 PM, Javier Martinez Canillas wrote:
> Hello,
> 
> This series allows the ipu3-cio2 driver to properly expose a subset of the
> media graph even if some drivers for the pending subdevices fail to probe.
> 
> Currently the driver exposes a non-functional graph since the pad links are
> created and the subdev dev nodes are registered in the v4l2 async .complete
> callback. Instead, these operations should be done in the .bound callback.
> 
> Patch #1 just adds a v4l2_device_register_subdev_node() function to allow
> registering a single device node for a subdev of a v4l2 device.
> 
> Patch #2 moves the logic of the ipu3-cio2 .complete callback to the .bound
> callback. The .complete callback is just removed since is empy after that.
> 
> Best regards,
> Javier
> 
> 
> Javier Martinez Canillas (2):
>   [media] v4l: allow to register dev nodes for individual v4l2 subdevs
>   media: intel-ipu3: create pad links and register subdev nodes at bound
>     time
> 

Any comments about these patches?

Best regards,
-- 
Javier Martinez Canillas
Software Engineer - Desktop Hardware Enablement
Red Hat