From: Greg KH <gregkh@linuxfoundation.org>
To: Heiko Stuebner <heiko@sntech.de>
Cc: rafael@kernel.org, dakr@kernel.org, hjc@rock-chips.com,
andy.yan@rock-chips.com, maarten.lankhorst@linux.intel.com,
mripard@kernel.org, tzimmermann@suse.de,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org, quentin.schulz@cherry.de
Subject: Re: [PATCH 1/2] drivers: base: component: add function to query the bound status
Date: Fri, 21 Feb 2025 07:14:07 +0100 [thread overview]
Message-ID: <2025022153-outdoors-snugly-3967@gregkh> (raw)
In-Reply-To: <20250220234141.2788785-2-heiko@sntech.de>
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@sntech.de>
> ---
> drivers/base/component.c | 14 ++++++++++++++
> include/linux/component.h | 4 +++-
> 2 files changed, 17 insertions(+), 1 deletion(-)
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
next prev parent reply other threads:[~2025-02-21 6:19 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-20 23:41 [PATCH 0/2] Fix the shutdown callback of a drm component device Heiko Stuebner
2025-02-20 23:41 ` [PATCH 1/2] drivers: base: component: add function to query the bound status Heiko Stuebner
2025-02-21 6:14 ` Greg KH [this message]
2025-02-27 8:44 ` Heiko Stübner
2025-02-27 11:20 ` Greg KH
2025-02-20 23:41 ` [PATCH 2/2] drm/rockchip: Fix shutdown when no drm-device is set up Heiko Stuebner
2025-02-26 20:28 ` Nicolas Frattaroli
2025-02-27 14:02 ` [PATCH 0/2] Fix the shutdown callback of a drm component device Heiko Stuebner
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