linux-kernel - [PATCH 1/5] interconnect: Add devm_of_icc_get_by

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Message-Id: <20260116-milos-camcc-icc-v1-1-400b7fcd156a@fairphone.com>
Date: Fri, 16 Jan 2026 14:17:20 +0100
From: Luca Weiss <luca.weiss@...rphone.com>
To: Georgi Djakov <djakov@...nel.org>, 
 Bjorn Andersson <andersson@...nel.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Konrad Dybcio <konradybcio@...nel.org>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org, 
 linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org, 
 devicetree@...r.kernel.org, Luca Weiss <luca.weiss@...rphone.com>
Subject: [PATCH 1/5] interconnect: Add devm_of_icc_get_by_index() as
 exported API for users

Users can use devm version of of_icc_get_by_index() to benefit from
automatic resource release.

Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
---
 drivers/interconnect/core.c  | 20 ++++++++++++++++++++
 include/linux/interconnect.h |  6 ++++++
 2 files changed, 26 insertions(+)

diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c
index 6cc979b26151..2242554525df 100644
--- a/drivers/interconnect/core.c
+++ b/drivers/interconnect/core.c
@@ -443,6 +443,26 @@ struct icc_path *devm_of_icc_get(struct device *dev, const char *name)
 }
 EXPORT_SYMBOL_GPL(devm_of_icc_get);
 
+struct icc_path *devm_of_icc_get_by_index(struct device *dev, int idx)
+{
+	struct icc_path **ptr, *path;
+
+	ptr = devres_alloc(devm_icc_release, sizeof(*ptr), GFP_KERNEL);
+	if (!ptr)
+		return ERR_PTR(-ENOMEM);
+
+	path = of_icc_get_by_index(dev, idx);
+	if (!IS_ERR(path)) {
+		*ptr = path;
+		devres_add(dev, ptr);
+	} else {
+		devres_free(ptr);
+	}
+
+	return path;
+}
+EXPORT_SYMBOL_GPL(devm_of_icc_get_by_index);
+
 /**
  * of_icc_get_by_index() - get a path handle from a DT node based on index
  * @dev: device pointer for the consumer device
diff --git a/include/linux/interconnect.h b/include/linux/interconnect.h
index 4b12821528a6..75a32ad0482e 100644
--- a/include/linux/interconnect.h
+++ b/include/linux/interconnect.h
@@ -47,6 +47,7 @@ struct icc_path *of_icc_get(struct device *dev, const char *name);
 struct icc_path *devm_of_icc_get(struct device *dev, const char *name);
 int devm_of_icc_bulk_get(struct device *dev, int num_paths, struct icc_bulk_data *paths);
 struct icc_path *of_icc_get_by_index(struct device *dev, int idx);
+struct icc_path *devm_of_icc_get_by_index(struct device *dev, int idx);
 void icc_put(struct icc_path *path);
 int icc_enable(struct icc_path *path);
 int icc_disable(struct icc_path *path);
@@ -79,6 +80,11 @@ static inline struct icc_path *of_icc_get_by_index(struct device *dev, int idx)
 	return NULL;
 }
 
+static inline struct icc_path *devm_of_icc_get_by_index(struct device *dev, int idx)
+{
+	return NULL;
+}
+
 static inline void icc_put(struct icc_path *path)
 {
 }

-- 
2.52.0