[PATCH 01/31] hwmon: (lineage-pem) use 4-argument i2c_smbus_read_block_data()

[Dmitry Torokhov]

Pass the expected data length and destination buffer directly to
i2c_smbus_read_block_data() instead of copying through an intermediate
buffer.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
---
 drivers/hwmon/lineage-pem.c | 17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)

diff --git a/drivers/hwmon/lineage-pem.c b/drivers/hwmon/lineage-pem.c
index 2553e49f8401..75a44b0639dc 100644
--- a/drivers/hwmon/lineage-pem.c
+++ b/drivers/hwmon/lineage-pem.c
@@ -130,20 +130,15 @@ struct pem_data {
 static int pem_read_block(struct i2c_client *client, u8 command, u8 *data,
 			  int data_len)
 {
-	u8 block_buffer[I2C_SMBUS_BLOCK_MAX];
 	int result;
 
-	result = i2c_smbus_read_block_data(client, command, block_buffer);
+	result = i2c_smbus_read_block_data(client, command, data_len, data);
 	if (unlikely(result < 0))
-		goto abort;
-	if (unlikely(result == 0xff || result != data_len)) {
-		result = -EIO;
-		goto abort;
-	}
-	memcpy(data, block_buffer, data_len);
-	result = 0;
-abort:
-	return result;
+		return result;
+	if (unlikely(result == 0xff || result != data_len))
+		return -EIO;
+
+	return 0;
 }
 
 static struct pem_data *pem_update_device(struct device *dev)

-- 
2.56.0.257.gf7497c7d27-goog