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Date: Tue, 14 Jul 2026 11:15:15 +0300
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: linux-kernel@vger.kernel.org, Andy Whitcroft <apw@canonical.com>,
	Joe Perches <joe@perches.com>, linux-media@vger.kernel.org,
	hans@jjverkuil.nl
Subject: Re: [PATCH 1/1] checkpatch: Deprecate V4L2 pipeline power management
 code
Message-ID: <20260714081515.GM1127719@killaraus.ideasonboard.com>
References: <20260713161327.3682-1-sakari.ailus@linux.intel.com>
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In-Reply-To: <20260713161327.3682-1-sakari.ailus@linux.intel.com>

Hi Sakari,

Thank you for the patch.

On Mon, Jul 13, 2026 at 07:13:27PM +0300, Sakari Ailus wrote:
> The V4L2 pipeline power management code, in particular
> v4l2_pipeline_link_notify(), v4l2_pipeline_pm_get() and
> v4l2_pipeline_pm_put() are deprecated and shall not be used in new code.
> 
> The drivers need to use the Runtime PM instead.

I'll be happy to see this API go, so we certainly need to make sure no
new drivers use it.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
> ---
>  scripts/checkpatch.pl | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 2b7a42bbdd94..a8a7374dc9c4 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -879,6 +879,9 @@ our %deprecated_apis = (
>  	"DEFINE_IDR"				=> "DEFINE_XARRAY",
>  	"idr_init"				=> "xa_init",
>  	"idr_init_base"				=> "xa_init_flags",
> +	"v4l2_pipeline_link_notify"		=> "",
> +	"v4l2_pipeline_pm_get"			=> "",
> +	"v4l2_pipeline_pm_put"			=> "",
>  );
>  
>  #Create a search pattern for all these strings to speed up a loop below

-- 
Regards,

Laurent Pinchart