linux-kernel - Re: [PATCH v4 9/9] drm/vkms: convert to use faux

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Message-ID: <2025022643-scouting-petticoat-492b@gregkh>
Date: Wed, 26 Feb 2025 11:07:11 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Louis Chauvet <louis.chauvet@...tlin.com>
Cc: Thomas Zimmermann <tzimmermann@...e.de>, linux-kernel@...r.kernel.org,
	Lyude Paul <lyude@...hat.com>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Danilo Krummrich <dakr@...nel.org>,
	Alexander Lobakin <aleksander.lobakin@...el.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Jonathan Cameron <Jonathan.Cameron@...wei.com>,
	Liam Girdwood <lgirdwood@...il.com>, Lukas Wunner <lukas@...ner.de>,
	Mark Brown <broonie@...nel.org>,
	Maíra Canal <mairacanal@...eup.net>,
	Robin Murphy <robin.murphy@....com>,
	Simona Vetter <simona.vetter@...ll.ch>,
	Zijun Hu <quic_zijuhu@...cinc.com>, linux-usb@...r.kernel.org,
	rust-for-linux@...r.kernel.org,
	Haneen Mohammed <hamohammed.sa@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	Melissa Wen <melissa.srw@...il.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	David Airlie <airlied@...il.com>, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v4 9/9] drm/vkms: convert to use faux_device

On Tue, Feb 25, 2025 at 02:51:40PM +0100, Louis Chauvet wrote:
> 
> 
> Le 25/02/2025 à 12:41, Thomas Zimmermann a écrit :
> > Hi
> > 
> > Am 10.02.25 um 15:37 schrieb Louis Chauvet:
> > > On 10/02/25 - 13:30, Greg Kroah-Hartman wrote:
> > > > The vkms driver does not need to create a platform device, as there is
> > > > no real platform resources associated it,  it only did so because it was
> > > > simple to do that in order to get a device to use for resource
> > > > management of drm resources.  Change the driver to use the faux device
> > > > instead as this is NOT a real platform device.
> > > > 
> > > > Cc: Louis Chauvet <louis.chauvet@...tlin.com>
> > > > Cc: Haneen Mohammed <hamohammed.sa@...il.com>
> > > > Cc: Simona Vetter <simona@...ll.ch>
> > > > Cc: Melissa Wen <melissa.srw@...il.com>
> > > > Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
> > > > Cc: Maxime Ripard <mripard@...nel.org>
> > > > Cc: Thomas Zimmermann <tzimmermann@...e.de>
> > > > Cc: David Airlie <airlied@...il.com>
> > > > Cc: dri-devel@...ts.freedesktop.org
> > > > Reviewed-by: Lyude Paul <lyude@...hat.com>
> > > > Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> > 
> > Reviewed-by: Thomas Zimmermann <tzimmermann@...e.de>
> > 
> > > Tested-by: Louis Chauvet <louis.chauvet@...tlin.com>
> > > Reviewed-by: Louis Chauvet <louis.chauvet@...tlin.com>
> > > 
> > > Thanks for the modification, it seems to work.
> > 
> > Should this patch be merged through DRM trees? drm-misc-next is at
> > v6.14-rc4 and has struct faux_device.
> 
> Hi,
> 
> I was not aware the faux-device was merged, as it is a new feature, I
> expected it to reach drm-misc-next on 6.15-rc1.

I added it to Linus's tree just so that DRM could get these changes into
their tree now :)

> I plan to merge [1] today/tomorrow (well tested with platform_device), and
> then I will submit an updated version of this patch (only trivial conflicts,
> but never tested with multiple VKMS devices).
> 
> [1]:https://lore.kernel.org/all/20250218101214.5790-1-jose.exposito89@gmail.com/

Great, thanks!

greg k-h