linux-kernel - [PATCH] cpufreq: qcom-hw: add CONFIG_COMMON

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Date: Thu, 15 Feb 2024 09:33:14 +0100
From: Arnd Bergmann <arnd@...nel.org>
To: "Rafael J. Wysocki" <rafael@...nel.org>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
	Xiu Jianfeng <xiujianfeng@...wei.com>
Cc: Arnd Bergmann <arnd@...db.de>,
	Alexander Stein <alexander.stein@...tq-group.com>,
	Jingyu Wang <jingyuwang_vip@....com>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] cpufreq: qcom-hw: add CONFIG_COMMON_CLK dependency

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

It is still possible to compile-test a kernel without CONFIG_COMMON_CLK
for some ancient ARM boards or other architectures, but this causes a
link failure in the qcom-cpufreq-hw driver:

ERROR: modpost: "devm_clk_hw_register" [drivers/cpufreq/qcom-cpufreq-hw.ko] undefined!
ERROR: modpost: "devm_of_clk_add_hw_provider" [drivers/cpufreq/qcom-cpufreq-hw.ko] undefined!
ERROR: modpost: "of_clk_hw_onecell_get" [drivers/cpufreq/qcom-cpufreq-hw.ko] undefined!

Add a Kconfig dependency here to make sure this always work. Apparently
this bug has been in the kernel for a while without me running into it
on randconfig builds as COMMON_CLK is almost always enabled.

I have cross-checked by building an allmodconfig kernel with COMMON_CLK
disabled, which showed no other driver having this problem.

Fixes: 4370232c727b ("cpufreq: qcom-hw: Add CPU clock provider support")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/cpufreq/Kconfig.arm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
index f911606897b8..a0ebad77666e 100644
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -173,6 +173,7 @@ config ARM_QCOM_CPUFREQ_NVMEM
 config ARM_QCOM_CPUFREQ_HW
 	tristate "QCOM CPUFreq HW driver"
 	depends on ARCH_QCOM || COMPILE_TEST
+	depends on COMMON_CLK
 	help
 	  Support for the CPUFreq HW driver.
 	  Some QCOM chipsets have a HW engine to offload the steps
-- 
2.39.2