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Message-ID: <d5df9a73-c093-3584-31f4-e2f4f7bd9272@redhat.com>
Date:   Fri, 25 Nov 2022 10:06:37 +0100
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Subject: Re: [PATCH 03/24] drm/tests: helpers: Create the device in another
 function
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To:     Maxime Ripard <maxime@cerno.tech>,
        Maxime Ripard <mripard@kernel.org>,
        Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        David Airlie <airlied@gmail.com>,
        Thomas Zimmermann <tzimmermann@suse.de>
Cc:     David Gow <davidgow@google.com>, linaro-mm-sig@lists.linaro.org,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        linux-kselftest@vger.kernel.org,
        =?UTF-8?Q?Ma=c3=adra_Canal?= <mairacanal@riseup.net>,
        linux-media@vger.kernel.org, kunit-dev@googlegroups.com,
        dri-devel@lists.freedesktop.org,
        Brendan Higgins <brendan.higgins@linux.dev>,
        linux-kernel@vger.kernel.org,
        Dave Stevenson <dave.stevenson@raspberrypi.com>
References: <20221123-rpi-kunit-tests-v1-0-051a0bb60a16@cerno.tech>
 <20221123-rpi-kunit-tests-v1-3-051a0bb60a16@cerno.tech>
From:   Javier Martinez Canillas <javierm@redhat.com>
In-Reply-To: <20221123-rpi-kunit-tests-v1-3-051a0bb60a16@cerno.tech>
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On 11/23/22 16:25, Maxime Ripard wrote:
> We'll need in some tests to control when the device needs to be added
> and removed, so let's split the device creation from the DRM device
> creation function.
> 
> Signed-off-by: Maxime Ripard <maxime@cerno.tech>
> ---

[...]

> -static int dev_init(struct kunit_resource *res, void *ptr)
> +struct device *drm_kunit_helper_alloc_device(struct kunit *test)
>  {
> -	char *name = ptr;
> -	struct device *dev;
> -
> -	dev = root_device_register(name);
> -	if (IS_ERR(dev))
> -		return PTR_ERR(dev);
> -
> -	res->data = dev;
> -	return 0;
> +	return root_device_register(FAKE_DEVICE_NAME);

I was going to ask if a platform device could be used here, to prevent the
issue you mentioned the other day of root_device not having a bus set. But
I see now that you are doing that change in the next patch.

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat