Merge 4.13-rc7 into staging-next

We want the staging and iio fixes in here to handle the merge issues.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2 files changed, 29 insertions, 3 deletions

diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c
index d82b788374b6..0d2ea3ee371b 100644
--- a/drivers/iio/pressure/bmp280-core.c
+++ b/drivers/iio/pressure/bmp280-core.c
@@ -282,6 +282,11 @@ static int bmp280_read_temp(struct bmp280_data *data,
 	}
 
 	adc_temp = be32_to_cpu(tmp) >> 12;
+	if (adc_temp == BMP280_TEMP_SKIPPED) {
+		/* reading was skipped */
+		dev_err(data->dev, "reading temperature skipped\n");
+		return -EIO;
+	}
 	comp_temp = bmp280_compensate_temp(data, adc_temp);
 
 	/*
@@ -317,6 +322,11 @@ static int bmp280_read_press(struct bmp280_data *data,
 	}
 
 	adc_press = be32_to_cpu(tmp) >> 12;
+	if (adc_press == BMP280_PRESS_SKIPPED) {
+		/* reading was skipped */
+		dev_err(data->dev, "reading pressure skipped\n");
+		return -EIO;
+	}
 	comp_press = bmp280_compensate_press(data, adc_press);
 
 	*val = comp_press;
@@ -345,6 +355,11 @@ static int bmp280_read_humid(struct bmp280_data *data, int *val, int *val2)
 	}
 
 	adc_humidity = be16_to_cpu(tmp);
+	if (adc_humidity == BMP280_HUMIDITY_SKIPPED) {
+		/* reading was skipped */
+		dev_err(data->dev, "reading humidity skipped\n");
+		return -EIO;
+	}
 	comp_humidity = bmp280_compensate_humidity(data, adc_humidity);
 
 	*val = comp_humidity;
@@ -597,14 +612,20 @@ static const struct bmp280_chip_info bmp280_chip_info = {
 
 static int bme280_chip_config(struct bmp280_data *data)
 {
-	int ret = bmp280_chip_config(data);
+	int ret;
 	u8 osrs = BMP280_OSRS_HUMIDITIY_X(data->oversampling_humid + 1);
 
+	/*
+	 * Oversampling of humidity must be set before oversampling of
+	 * temperature/pressure is set to become effective.
+	 */
+	ret = regmap_update_bits(data->regmap, BMP280_REG_CTRL_HUMIDITY,
+				  BMP280_OSRS_HUMIDITY_MASK, osrs);
+
 	if (ret < 0)
 		return ret;
 
-	return regmap_update_bits(data->regmap, BMP280_REG_CTRL_HUMIDITY,
-				  BMP280_OSRS_HUMIDITY_MASK, osrs);
+	return bmp280_chip_config(data);
 }
 
 static const struct bmp280_chip_info bme280_chip_info = {
diff --git a/drivers/iio/pressure/bmp280.h b/drivers/iio/pressure/bmp280.h
index 2c770e13be0e..61347438b779 100644
--- a/drivers/iio/pressure/bmp280.h
+++ b/drivers/iio/pressure/bmp280.h
@@ -96,6 +96,11 @@
 #define BME280_CHIP_ID			0x60
 #define BMP280_SOFT_RESET_VAL		0xB6
 
+/* BMP280 register skipped special values */
+#define BMP280_TEMP_SKIPPED		0x80000
+#define BMP280_PRESS_SKIPPED		0x80000
+#define BMP280_HUMIDITY_SKIPPED		0x8000
+
 /* Regmap configurations */
 extern const struct regmap_config bmp180_regmap_config;
 extern const struct regmap_config bmp280_regmap_config;