linux-kernel - [PATCH] of: rexport of_find_next_cache

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Date:   Wed, 11 Oct 2023 15:14:08 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Yang Yang <yang.yang29@....com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Sebastian Reichel <sre@...nel.org>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Sudeep Holla <sudeep.holla@....com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] of: rexport of_find_next_cache_node()

From: Arnd Bergmann <arnd@...db.de>

This function is now called from a cpufreq driver, but that breaks the
build when the caller is in a loadable module, because of a missing
export:

ERROR: modpost: "of_find_next_cache_node" [drivers/cpufreq/qcom-cpufreq-nvmem.ko] undefined!

Export this as a GPL-only symbol, like the other related functions in
this file.

Fixes: 7683a63c08ff5 ("cpufreq: qcom-nvmem: create L2 cache device")
Fixes: a3e31b4588443 ("of: Move definition of of_find_next_cache_node into common code.")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/of/base.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 8d93cb6ea9cde..c4cf558e60d92 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1905,6 +1905,7 @@ struct device_node *of_find_next_cache_node(const struct device_node *np)
 
 	return NULL;
 }
+EXPORT_SYMBOL_GPL(of_find_next_cache_node);
 
 /**
  * of_find_last_cache_level - Find the level at which the last cache is
-- 
2.39.2