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authorLinus Torvalds <torvalds@linux-foundation.org>2016-08-01 16:49:13 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2016-08-01 16:49:13 -0400
commit2790aed095fe50b21ab7ed94dc34a0f410a3872c (patch)
tree842f28c60c19d52029b71d9b623393b2057b7c34 /drivers/hwmon
parentf38d2e5313f0af9d9b66c02a5d49c71deb994b85 (diff)
parent601807bbb7b422012492611b283bdf3647d3742c (diff)
downloadlinux-2790aed095fe50b21ab7ed94dc34a0f410a3872c.tar.bz2
Merge tag 'hwmon-for-linus-v4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull more hwmon updates from Guenter Roeck: - Improved error handling in tmp102, lm75, and lm90 drivers - Bug fixes in sht3x, ftsteutates, iio_hwmon, and adt7411 drivers * tag 'hwmon-for-linus-v4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (adt7411) set sane values for CFG1 and CFG3 hwmon: (iio_hwmon) fix memory leak in name attribute hwmon: (ftsteutates) Fix potential memory access error hwmon: (tmp102) Improve error handling hwmon: (lm75) Improve error handling hwmon: (lm90) Improve error handling hwmon: (lm90) Add missing assignment hwmon: (sht3x) set initial jiffies to last_update
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/adt7411.c48
-rw-r--r--drivers/hwmon/ftsteutates.c2
-rw-r--r--drivers/hwmon/iio_hwmon.c24
-rw-r--r--drivers/hwmon/lm75.c6
-rw-r--r--drivers/hwmon/lm90.c14
-rw-r--r--drivers/hwmon/sht3x.c2
-rw-r--r--drivers/hwmon/tmp102.c4
7 files changed, 73 insertions, 27 deletions
diff --git a/drivers/hwmon/adt7411.c b/drivers/hwmon/adt7411.c
index a7f886961830..fc1e65a263a4 100644
--- a/drivers/hwmon/adt7411.c
+++ b/drivers/hwmon/adt7411.c
@@ -30,6 +30,7 @@
#define ADT7411_REG_CFG1 0x18
#define ADT7411_CFG1_START_MONITOR (1 << 0)
+#define ADT7411_CFG1_RESERVED_BIT1 (1 << 1)
#define ADT7411_CFG1_RESERVED_BIT3 (1 << 3)
#define ADT7411_REG_CFG2 0x19
@@ -37,6 +38,9 @@
#define ADT7411_REG_CFG3 0x1a
#define ADT7411_CFG3_ADC_CLK_225 (1 << 0)
+#define ADT7411_CFG3_RESERVED_BIT1 (1 << 1)
+#define ADT7411_CFG3_RESERVED_BIT2 (1 << 2)
+#define ADT7411_CFG3_RESERVED_BIT3 (1 << 3)
#define ADT7411_CFG3_REF_VDD (1 << 4)
#define ADT7411_REG_DEVICE_ID 0x4d
@@ -280,6 +284,45 @@ static int adt7411_detect(struct i2c_client *client,
return 0;
}
+static int adt7411_init_device(struct adt7411_data *data)
+{
+ int ret;
+ u8 val;
+
+ ret = i2c_smbus_read_byte_data(data->client, ADT7411_REG_CFG3);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * We must only write zero to bit 1 and bit 2 and only one to bit 3
+ * according to the datasheet.
+ */
+ val = ret;
+ val &= ~(ADT7411_CFG3_RESERVED_BIT1 | ADT7411_CFG3_RESERVED_BIT2);
+ val |= ADT7411_CFG3_RESERVED_BIT3;
+
+ ret = i2c_smbus_write_byte_data(data->client, ADT7411_REG_CFG3, val);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_smbus_read_byte_data(data->client, ADT7411_REG_CFG1);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * We must only write zero to bit 1 and only one to bit 3 according to
+ * the datasheet.
+ */
+ val = ret;
+ val &= ~ADT7411_CFG1_RESERVED_BIT1;
+ val |= ADT7411_CFG1_RESERVED_BIT3;
+
+ /* enable monitoring */
+ val |= ADT7411_CFG1_START_MONITOR;
+
+ return i2c_smbus_write_byte_data(data->client, ADT7411_REG_CFG1, val);
+}
+
static int adt7411_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -297,10 +340,7 @@ static int adt7411_probe(struct i2c_client *client,
mutex_init(&data->device_lock);
mutex_init(&data->update_lock);
- /* According to the datasheet, we must only write 1 to bit 3 */
- ret = adt7411_modify_bit(client, ADT7411_REG_CFG1,
- ADT7411_CFG1_RESERVED_BIT3
- | ADT7411_CFG1_START_MONITOR, 1);
+ ret = adt7411_init_device(data);
if (ret < 0)
return ret;
diff --git a/drivers/hwmon/ftsteutates.c b/drivers/hwmon/ftsteutates.c
index 2b2ff67026be..48633e541dc3 100644
--- a/drivers/hwmon/ftsteutates.c
+++ b/drivers/hwmon/ftsteutates.c
@@ -242,7 +242,7 @@ static int fts_wd_set_resolution(struct fts_data *data,
}
if (resolution == seconds)
- set_bit(1, (unsigned long *)&ret);
+ ret |= BIT(1);
else
ret &= ~BIT(1);
diff --git a/drivers/hwmon/iio_hwmon.c b/drivers/hwmon/iio_hwmon.c
index b550ba5fa58a..89449871bca7 100644
--- a/drivers/hwmon/iio_hwmon.c
+++ b/drivers/hwmon/iio_hwmon.c
@@ -110,24 +110,24 @@ static int iio_hwmon_probe(struct platform_device *pdev)
switch (type) {
case IIO_VOLTAGE:
- a->dev_attr.attr.name = kasprintf(GFP_KERNEL,
- "in%d_input",
- in_i++);
+ a->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
+ "in%d_input",
+ in_i++);
break;
case IIO_TEMP:
- a->dev_attr.attr.name = kasprintf(GFP_KERNEL,
- "temp%d_input",
- temp_i++);
+ a->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
+ "temp%d_input",
+ temp_i++);
break;
case IIO_CURRENT:
- a->dev_attr.attr.name = kasprintf(GFP_KERNEL,
- "curr%d_input",
- curr_i++);
+ a->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
+ "curr%d_input",
+ curr_i++);
break;
case IIO_HUMIDITYRELATIVE:
- a->dev_attr.attr.name = kasprintf(GFP_KERNEL,
- "humidity%d_input",
- humidity_i++);
+ a->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
+ "humidity%d_input",
+ humidity_i++);
break;
default:
ret = -EINVAL;
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index 547a9c87c68c..92f9d4bbf597 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -220,7 +220,7 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id)
struct device *dev = &client->dev;
struct device *hwmon_dev;
struct lm75_data *data;
- int status;
+ int status, err;
u8 set_mask, clr_mask;
int new;
enum lm75_type kind = id->driver_data;
@@ -331,7 +331,9 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id)
if (status != new)
i2c_smbus_write_byte_data(client, LM75_REG_CONF, new);
- devm_add_action(dev, lm75_remove, data);
+ err = devm_add_action_or_reset(dev, lm75_remove, data);
+ if (err)
+ return err;
dev_dbg(dev, "Config %02x\n", new);
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 1e8237478b2f..496e771b363f 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -529,7 +529,7 @@ static int lm90_update_limits(struct device *dev)
return val;
data->temp_hyst = val;
- lm90_read_reg(client, LM90_REG_R_REMOTE_LOWH);
+ val = lm90_read_reg(client, LM90_REG_R_REMOTE_LOWH);
if (val < 0)
return val;
data->temp11[REMOTE_LOW] = val << 8;
@@ -1551,9 +1551,7 @@ static int lm90_init_client(struct i2c_client *client, struct lm90_data *data)
if (config != data->config_orig) /* Only write if changed */
i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1, config);
- devm_add_action(&client->dev, lm90_restore_conf, data);
-
- return 0;
+ return devm_add_action_or_reset(&client->dev, lm90_restore_conf, data);
}
static bool lm90_is_tripped(struct i2c_client *client, u16 *status)
@@ -1640,7 +1638,9 @@ static int lm90_probe(struct i2c_client *client,
return err;
}
- devm_add_action(dev, lm90_regulator_disable, regulator);
+ err = devm_add_action_or_reset(dev, lm90_regulator_disable, regulator);
+ if (err)
+ return err;
data = devm_kzalloc(dev, sizeof(struct lm90_data), GFP_KERNEL);
if (!data)
@@ -1696,7 +1696,9 @@ static int lm90_probe(struct i2c_client *client,
err = device_create_file(dev, &dev_attr_pec);
if (err)
return err;
- devm_add_action(dev, lm90_remove_pec, dev);
+ err = devm_add_action_or_reset(dev, lm90_remove_pec, dev);
+ if (err)
+ return err;
}
hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
diff --git a/drivers/hwmon/sht3x.c b/drivers/hwmon/sht3x.c
index b73a48832732..6ea99cd6ae79 100644
--- a/drivers/hwmon/sht3x.c
+++ b/drivers/hwmon/sht3x.c
@@ -720,7 +720,7 @@ static int sht3x_probe(struct i2c_client *client,
data->setup.blocking_io = false;
data->setup.high_precision = true;
data->mode = 0;
- data->last_update = 0;
+ data->last_update = jiffies - msecs_to_jiffies(3000);
data->client = client;
crc8_populate_msb(sht3x_crc8_table, SHT3X_CRC8_POLYNOMIAL);
diff --git a/drivers/hwmon/tmp102.c b/drivers/hwmon/tmp102.c
index a942a2574a4d..8479ac5eb853 100644
--- a/drivers/hwmon/tmp102.c
+++ b/drivers/hwmon/tmp102.c
@@ -227,7 +227,9 @@ static int tmp102_probe(struct i2c_client *client,
tmp102->config_orig = regval;
- devm_add_action(dev, tmp102_restore_config, tmp102);
+ err = devm_add_action_or_reset(dev, tmp102_restore_config, tmp102);
+ if (err)
+ return err;
regval &= ~TMP102_CONFIG_CLEAR;
regval |= TMP102_CONFIG_SET;