linux-kernel - [PATCH v4 03/10] media: samsung: exynos4-is: drop simple-bus from compatibles

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Date:   Mon, 13 Mar 2023 15:49:09 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v4 03/10] media: samsung: exynos4-is: drop simple-bus from compatibles

The FIMC camera node wrapper is not a bus, so using simple-bus fallback
compatible just to instantiate its children nodes was never correct.
Driver should explicitly populate all its children devices.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

---

Changes since v1:
1. Do not depopulate on errors because it causes several errors.
---
 drivers/media/platform/samsung/exynos4-is/media-dev.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/media/platform/samsung/exynos4-is/media-dev.c b/drivers/media/platform/samsung/exynos4-is/media-dev.c
index 22baa429ed5d..6839007edf1d 100644
--- a/drivers/media/platform/samsung/exynos4-is/media-dev.c
+++ b/drivers/media/platform/samsung/exynos4-is/media-dev.c
@@ -1440,6 +1440,10 @@ static int fimc_md_probe(struct platform_device *pdev)
 	if (!fmd)
 		return -ENOMEM;
 
+	ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
+	if (ret < 0)
+		return -ENOMEM;
+
 	spin_lock_init(&fmd->slock);
 	INIT_LIST_HEAD(&fmd->pipelines);
 	fmd->pdev = pdev;
-- 
2.34.1