linux-kernel - [PATCH] hwmon: ltq-cputemp: restrict it to SOC

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Date:   Mon,  9 May 2022 16:47:40 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        kernel test robot <lkp@...el.com>,
        Florian Eckert <fe@....tdt.de>,
        Guenter Roeck <linux@...ck-us.net>,
        Jean Delvare <jdelvare@...e.com>, linux-hwmon@...r.kernel.org
Subject: [PATCH] hwmon: ltq-cputemp: restrict it to SOC_XWAY

Building with SENSORS_LTQ_CPUTEMP=y with SOC_FALCON=y causes build
errors since FALCON does not support the same features as XWAY.

Change this symbol to depend on SOC_XWAY since that provides the
necessary interfaces.

Repairs these build errors:

../drivers/hwmon/ltq-cputemp.c: In function 'ltq_cputemp_enable':
../drivers/hwmon/ltq-cputemp.c:23:9: error: implicit declaration of function 'ltq_cgu_w32'; did you mean 'ltq_ebu_w32'? [-Werror=implicit-function-declaration]
   23 |         ltq_cgu_w32(ltq_cgu_r32(CGU_GPHY1_CR) | CGU_TEMP_PD, CGU_GPHY1_CR);
../drivers/hwmon/ltq-cputemp.c:23:21: error: implicit declaration of function 'ltq_cgu_r32'; did you mean 'ltq_ebu_r32'? [-Werror=implicit-function-declaration]
   23 |         ltq_cgu_w32(ltq_cgu_r32(CGU_GPHY1_CR) | CGU_TEMP_PD, CGU_GPHY1_CR);
../drivers/hwmon/ltq-cputemp.c: In function 'ltq_cputemp_probe':
../drivers/hwmon/ltq-cputemp.c:92:31: error: 'SOC_TYPE_VR9_2' undeclared (first use in this function)
   92 |         if (ltq_soc_type() != SOC_TYPE_VR9_2)

Fixes: 7074d0a92758 ("hwmon: (ltq-cputemp) add cpu temp sensor driver")
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Reported-by: kernel test robot <lkp@...el.com>
Cc: Florian Eckert <fe@....tdt.de>
Cc: Guenter Roeck <linux@...ck-us.net>
Cc: Jean Delvare <jdelvare@...e.com>
Cc: linux-hwmon@...r.kernel.org
---
 drivers/hwmon/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -977,7 +977,7 @@ config SENSORS_LTC4261

 config SENSORS_LTQ_CPUTEMP
 	bool "Lantiq cpu temperature sensor driver"
-	depends on LANTIQ
+	depends on SOC_XWAY
 	help
 	  If you say yes here you get support for the temperature
 	  sensor inside your CPU.