[PATCH 16/31] hwmon: (pmbus/lt7182s) use 4-argument i2c_smbus_read_block_data()

[Dmitry Torokhov <dmitry.torokhov@gmail.com>]

Pass sizeof(buf) - 1 to i2c_smbus_read_block_data() in lt7182s_probe()
to leave space for the NUL terminator.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/hwmon/pmbus/lt7182s.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/hwmon/pmbus/lt7182s.c b/drivers/hwmon/pmbus/lt7182s.c
index f8971a786f25..62e180dd5dbf 100644
--- a/drivers/hwmon/pmbus/lt7182s.c
+++ b/drivers/hwmon/pmbus/lt7182s.c
@@ -113,7 +113,8 @@ static int lt7182s_probe(struct i2c_client *client)
 				     I2C_FUNC_SMBUS_READ_BLOCK_DATA))
 		return -ENODEV;
 
-	ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, buf);
+	ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID,
+					sizeof(buf) - 1, buf);
 	if (ret < 0) {
 		dev_err(dev, "Failed to read PMBUS_MFR_ID\n");
 		return ret;
@@ -124,7 +125,8 @@ static int lt7182s_probe(struct i2c_client *client)
 		return -ENODEV;
 	}
 
-	ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, buf);
+	ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL,
+					sizeof(buf) - 1, buf);
 	if (ret < 0) {
 		dev_err(dev, "Failed to read PMBUS_MFR_MODEL\n");
 		return ret;

-- 
2.56.0.257.gf7497c7d27-goog