linux-kernel - [PATCH 11/13] soc: qcom: Simplify with of_machine_get_match

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Message-Id: <20251106-b4-of-match-matchine-data-v1-11-d780ea1780c2@linaro.org>
Date: Thu, 06 Nov 2025 20:07:18 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Rob Herring <robh@...nel.org>, Saravana Kannan <saravanak@...gle.com>, 
 "Rafael J. Wysocki" <rafael@...nel.org>, 
 Viresh Kumar <viresh.kumar@...aro.org>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Yangtao Li <tiny.windzz@...il.com>, Chen-Yu Tsai <wens@...nel.org>, 
 Jernej Skrabec <jernej.skrabec@...il.com>, 
 Samuel Holland <samuel@...lland.org>, 
 Lorenzo Pieralisi <lpieralisi@...nel.org>, 
 Daniel Lezcano <daniel.lezcano@...aro.org>, 
 Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, 
 Thomas Gleixner <tglx@...utronix.de>, 
 Nicolas Ferre <nicolas.ferre@...rochip.com>, 
 Alexandre Belloni <alexandre.belloni@...tlin.com>, 
 Claudiu Beznea <claudiu.beznea@...on.dev>, 
 Maximilian Luz <luzmaximilian@...il.com>, Hans de Goede <hansg@...nel.org>, 
 Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>, 
 Daniel Lezcano <daniel.lezcano@...nel.org>, 
 Thierry Reding <thierry.reding@...il.com>, 
 Jonathan Hunter <jonathanh@...dia.com>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-mediatek@...ts.infradead.org, linux-sunxi@...ts.linux.dev, 
 linux-arm-msm@...r.kernel.org, platform-driver-x86@...r.kernel.org, 
 linux-tegra@...r.kernel.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 11/13] soc: qcom: Simplify with of_machine_get_match_data()

Replace open-coded getting root OF node, matching against it and getting
the match data with new of_machine_get_match_data() helper.

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

---

Depends on the first OF patch.
---
 drivers/soc/qcom/qcom_pd_mapper.c | 17 ++---------------
 1 file changed, 2 insertions(+), 15 deletions(-)

diff --git a/drivers/soc/qcom/qcom_pd_mapper.c b/drivers/soc/qcom/qcom_pd_mapper.c
index 1bcbe69688d2..07198d44b559 100644
--- a/drivers/soc/qcom/qcom_pd_mapper.c
+++ b/drivers/soc/qcom/qcom_pd_mapper.c
@@ -613,25 +613,12 @@ static void qcom_pdm_stop(struct qcom_pdm_data *data)
 static struct qcom_pdm_data *qcom_pdm_start(void)
 {
 	const struct qcom_pdm_domain_data * const *domains;
-	const struct of_device_id *match;
 	struct qcom_pdm_data *data;
-	struct device_node *root;
 	int ret, i;

-	root = of_find_node_by_path("/");
-	if (!root)
-		return ERR_PTR(-ENODEV);
-
-	match = of_match_node(qcom_pdm_domains, root);
-	of_node_put(root);
-	if (!match) {
-		pr_notice("PDM: no support for the platform, userspace daemon might be required.\n");
-		return ERR_PTR(-ENODEV);
-	}
-
-	domains = match->data;
+	domains = of_machine_get_match_data(qcom_pdm_domains);
 	if (!domains) {
-		pr_debug("PDM: no domains\n");
+		pr_notice("PDM: no support for the platform or no domains, userspace daemon might be required.\n");
 		return ERR_PTR(-ENODEV);
 	}

-- 
2.48.1