[PATCH 30/31] hwmon: (pmbus/ucd9200) use 4-argument i2c_smbus_read_block_data()
From: Dmitry Torokhov
Date: Sat Oct 24 2026 - 23:10:26 EST
Pass sizeof(block_buffer) - 1 to i2c_smbus_read_block_data() in
ucd9200_probe() to leave space for the NUL terminator.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
---
drivers/hwmon/pmbus/ucd9200.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/hwmon/pmbus/ucd9200.c b/drivers/hwmon/pmbus/ucd9200.c
index 5e07bba111a1..08bb91e095bb 100644
--- a/drivers/hwmon/pmbus/ucd9200.c
+++ b/drivers/hwmon/pmbus/ucd9200.c
@@ -85,7 +85,7 @@ static int ucd9200_probe(struct i2c_client *client)
return -ENODEV;
ret = i2c_smbus_read_block_data(client, UCD9200_DEVICE_ID,
- block_buffer);
+ sizeof(block_buffer) - 1, block_buffer);
if (ret < 0) {
dev_err(&client->dev, "Failed to read device ID\n");
return ret;
@@ -118,7 +118,7 @@ static int ucd9200_probe(struct i2c_client *client)
return -ENOMEM;
ret = i2c_smbus_read_block_data(client, UCD9200_PHASE_INFO,
- block_buffer);
+ sizeof(block_buffer) - 1, block_buffer);
if (ret < 0) {
dev_err(&client->dev, "Failed to read phase information\n");
return ret;
--
2.56.0.257.gf7497c7d27-goog