[PATCH 09/31] hwmon: (pmbus/crps) use 4-argument i2c_smbus_read_block_data()

[Dmitry Torokhov]

Pass sizeof(buf) - 1 to i2c_smbus_read_block_data() in crps_probe()
and shrink the buffer declaration to I2C_SMBUS_BLOCK_MAX + 1 since
only a single NUL terminator byte is needed.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
---
 drivers/hwmon/pmbus/crps.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/hwmon/pmbus/crps.c b/drivers/hwmon/pmbus/crps.c
index 266ec8947519..2be3869ae8c8 100644
--- a/drivers/hwmon/pmbus/crps.c
+++ b/drivers/hwmon/pmbus/crps.c
@@ -31,9 +31,10 @@ static int crps_probe(struct i2c_client *client)
 {
 	int rc;
 	struct device *dev = &client->dev;
-	char buf[I2C_SMBUS_BLOCK_MAX + 2] = { 0 };
+	char buf[I2C_SMBUS_BLOCK_MAX + 1] = { 0 };
 
-	rc = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, buf);
+	rc = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL,
+				       sizeof(buf) - 1, buf);
 	if (rc < 0)
 		return dev_err_probe(dev, rc, "Failed to read PMBUS_MFR_MODEL\n");
 

-- 
2.56.0.257.gf7497c7d27-goog