linux-kernel - [PATCH] cpufreq: imx: fix NVMEM_IMX

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Date:   Thu,  3 Dec 2020 23:53:32 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Walter Lozano <walter.lozano@...labora.com>
Cc:     Arnd Bergmann <arnd@...db.de>, Ansuel Smith <ansuelsmth@...il.com>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] cpufreq: imx: fix NVMEM_IMX_OCOTP dependency

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

A driver should not 'select' drivers from another subsystem.
If NVMEM is disabled, this one results in a warning:

WARNING: unmet direct dependencies detected for NVMEM_IMX_OCOTP
  Depends on [n]: NVMEM [=n] && (ARCH_MXC [=y] || COMPILE_TEST [=y]) && HAS_IOMEM [=y]
  Selected by [y]:
  - ARM_IMX6Q_CPUFREQ [=y] && CPU_FREQ [=y] && (ARM || ARM64 [=y]) && ARCH_MXC [=y] && REGULATOR_ANATOP [=y]

Change the 'select' to 'depends on' to prevent it from going wrong,
and allow compile-testing without that driver, since it is only
a runtime dependency.

Fixes: 2782ef34ed23 ("cpufreq: imx: Select NVMEM_IMX_OCOTP")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/cpufreq/Kconfig.arm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
index 0732854d94ec..434ef03d2762 100644
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -94,7 +94,7 @@ config ARM_IMX6Q_CPUFREQ
 	tristate "Freescale i.MX6 cpufreq support"
 	depends on ARCH_MXC
 	depends on REGULATOR_ANATOP
-	select NVMEM_IMX_OCOTP
+	depends on NVMEM_IMX_OCOTP || COMPILE_TEST
 	select PM_OPP
 	help
 	  This adds cpufreq driver support for Freescale i.MX6 series SoCs.
-- 
2.27.0