[PATCH net-next 2/2] net: ena: simplify some pointer addition

[Rosen Penev <rosenp@gmail.com>]

Use ethtool_sprintf to simplify the code.

Because strings_buf is separate from buf, it needs to be incremented
separately.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/net/ethernet/amazon/ena/ena_ethtool.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/amazon/ena/ena_ethtool.c b/drivers/net/ethernet/amazon/ena/ena_ethtool.c
index fa9d7b8ec00d..96fa55a88faf 100644
--- a/drivers/net/ethernet/amazon/ena/ena_ethtool.c
+++ b/drivers/net/ethernet/amazon/ena/ena_ethtool.c
@@ -1120,7 +1120,7 @@ static void ena_dump_stats_ex(struct ena_adapter *adapter, u8 *buf)
 	u8 *strings_buf;
 	u64 *data_buf;
 	int strings_num;
-	int i, rc;
+	int i;
 
 	strings_num = ena_get_sw_stats_count(adapter);
 	if (strings_num <= 0) {
@@ -1149,17 +1149,16 @@ static void ena_dump_stats_ex(struct ena_adapter *adapter, u8 *buf)
 	/* If there is a buffer, dump stats, otherwise print them to dmesg */
 	if (buf)
 		for (i = 0; i < strings_num; i++) {
-			rc = snprintf(buf, ETH_GSTRING_LEN + sizeof(u64),
-				      "%s %llu\n",
-				      strings_buf + i * ETH_GSTRING_LEN,
-				      data_buf[i]);
-			buf += rc;
+			ethtool_sprintf(&buf, "%s %llu\n", strings_buf,
+					data_buf[i]);
+			strings_buf += ETH_GSTRING_LEN;
 		}
 	else
-		for (i = 0; i < strings_num; i++)
+		for (i = 0; i < strings_num; i++) {
 			netif_err(adapter, drv, netdev, "%s: %llu\n",
-				  strings_buf + i * ETH_GSTRING_LEN,
-				  data_buf[i]);
+				  strings_buf, data_buf[i]);
+			strings_buf += ETH_GSTRING_LEN;
+		}
 
 	kfree(strings_buf);
 	kfree(data_buf);
-- 
2.47.0