linux-kernel - Re: [PATCH 1/2] drivers: base: component: add function to query the bound status

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Message-ID: <12995210.iMDcRRXYNz@diego>
Date: Thu, 27 Feb 2025 09:44:23 +0100
From: Heiko Stübner <heiko@...ech.de>
To: Greg KH <gregkh@...uxfoundation.org>
Cc: rafael@...nel.org, dakr@...nel.org, hjc@...k-chips.com,
 andy.yan@...k-chips.com, maarten.lankhorst@...ux.intel.com,
 mripard@...nel.org, tzimmermann@...e.de, dri-devel@...ts.freedesktop.org,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-rockchip@...ts.infradead.org, quentin.schulz@...rry.de
Subject:
 Re: [PATCH 1/2] drivers: base: component: add function to query the bound
 status

Hi Greg,

Am Freitag, 21. Februar 2025, 07:14:07 MEZ schrieb Greg KH:
> On Fri, Feb 21, 2025 at 12:41:40AM +0100, Heiko Stuebner wrote:
> > The component helpers already expose the bound status in debugfs, but at
> > times it might be necessary to also check that state in the kernel and
> > act differently depending on the result.
> > 
> > For example the shutdown handler of a drm-driver might need to stop
> > a whole output pipeline if the drm device is up and running, but may
> > run into problems if that drm-device has never been set up before,
> > for example because the binding deferred.
> > 
> > So add a little helper that returns the bound status for a componet
> > device.
> > 
> > Signed-off-by: Heiko Stuebner <heiko@...ech.de>
> > ---
> >  drivers/base/component.c  | 14 ++++++++++++++
> >  include/linux/component.h |  4 +++-
> >  2 files changed, 17 insertions(+), 1 deletion(-)
> 
> Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

just for safety and not stepping on people's toes, does the Acked-by mean
that this patch can go together with its user through the drm-misc tree?


Thanks a lot
Heiko