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Subject: Re: [PATCH v4 0/8] Make fw_devlink=on more forgiving
To:     Saravana Kannan <saravanak@google.com>,
        Jonathan Corbet <corbet@lwn.net>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Kevin Hilman <khilman@kernel.org>,
        Ulf Hansson <ulf.hansson@linaro.org>,
        Len Brown <len.brown@intel.com>, Len Brown <lenb@kernel.org>,
        Pavel Machek <pavel@ucw.cz>,
        Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd <sboyd@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Frank Rowand <frowand.list@gmail.com>,
        Marc Zyngier <maz@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>
Cc:     linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-pm@vger.kernel.org, linux-clk@vger.kernel.org,
        devicetree@vger.kernel.org, linux-acpi@vger.kernel.org,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        kernel-team@android.com
From:   Marek Szyprowski <m.szyprowski@samsung.com>
Message-ID: <7b486072-453d-a344-bdfc-dec58a35c8f5@samsung.com>
Date:   Mon, 8 Feb 2021 09:40:13 +0100
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        <20210205222644.2357303-1-saravanak@google.com>
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Hi Saravana,

On 05.02.2021 23:26, Saravana Kannan wrote:
> There are a lot of devices/drivers where they never have a struct device
> created for them or the driver initializes the hardware without ever
> binding to the struct device.
>
> This series is intended to avoid any boot regressions due to such
> devices/drivers when fw_devlink=on and also address the handling of
> optional suppliers.
>
> Patch 1 and 2 addresses the issue of firmware nodes that look like
> they'll have struct devices created for them, but will never actually
> have struct devices added for them. For example, DT nodes with a
> compatible property that don't have devices added for them.
>
> Patch 3 and 4 allow for handling optional DT bindings.
>
> Patch 5 sets up a generic API to handle drivers that never bind with
> their devices.
>
> Patch 6 through 8 update different frameworks to use the new API.

This patchset fixes probing issue observed on various Exynos based 
boards even with commit c09a3e6c97f0 ("soc: samsung: pm_domains: Convert 
to regular platform driver") reverted. Thanks!

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>

Best regards

-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland