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authorJean Delvare <jdelvare@suse.de>2014-05-25 17:23:08 +0200
committerJean Delvare <jdelvare@suse.de>2014-05-25 17:23:08 +0200
commit59cf4243e557aa64ab2ef51280454aa1f3828e14 (patch)
tree55aec0b1edfe4d62ca57f9ad803683adc1895acf
parent0132514588f3a0685861221058116a383bff4deb (diff)
downloadlinux-59cf4243e557aa64ab2ef51280454aa1f3828e14.tar.gz
hwmon: (ntc_thermistor) Fix dependencies
In commit 9e8269de, support was added for ntc_thermistor devices being declared in the device tree and implemented on top of IIO. With that change, a dependency was added to the ntc_thermistor driver: depends on (!OF && !IIO) || (OF && IIO) This construct has the drawback that the driver can no longer be selected when OF is set and IIO isn't, nor when IIO is set and OF is not. This is a regression for the original users of the driver. As the new code depends on IIO and is useless without OF, include it only if both are enabled, and set the dependencies accordingly. This is clearer, more simple and more correct. Signed-off-by: Jean Delvare <jdelvare@suse.de> Fixes: 9e8269de hwmon: (ntc_thermistor) Add DT with IIO support to NTC thermistor driver Reviewed-by: Guenter Roeck <linux@roeck-us.net> Cc: Naveen Krishna Chatradhi <ch.naveen@samsung.com> Cc: Doug Anderson <dianders@chromium.org>
-rw-r--r--drivers/hwmon/Kconfig2
-rw-r--r--drivers/hwmon/ntc_thermistor.c4
2 files changed, 4 insertions, 2 deletions
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index bc196f49ec53..4af0da96c2e2 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -1053,7 +1053,7 @@ config SENSORS_PC87427
config SENSORS_NTC_THERMISTOR
tristate "NTC thermistor support"
- depends on (!OF && !IIO) || (OF && IIO)
+ depends on !OF || IIO=n || IIO
help
This driver supports NTC thermistors sensor reading and its
interpretation. The driver can also monitor the temperature and
diff --git a/drivers/hwmon/ntc_thermistor.c b/drivers/hwmon/ntc_thermistor.c
index 8a17f01e8672..6b4413ce4d39 100644
--- a/drivers/hwmon/ntc_thermistor.c
+++ b/drivers/hwmon/ntc_thermistor.c
@@ -141,7 +141,7 @@ struct ntc_data {
char name[PLATFORM_NAME_SIZE];
};
-#ifdef CONFIG_OF
+#if defined(CONFIG_OF) && IS_ENABLED(CONFIG_IIO)
static int ntc_adc_iio_read(struct ntc_thermistor_platform_data *pdata)
{
struct iio_channel *channel = pdata->chan;
@@ -223,6 +223,8 @@ ntc_thermistor_parse_dt(struct platform_device *pdev)
return NULL;
}
+#define ntc_match NULL
+
static void ntc_iio_channel_release(struct ntc_thermistor_platform_data *pdata)
{ }
#endif