[PATCH net-next v2] net: xilinx: axienet: Use NL_SET_ERR_MSG instead of netdev_err

[Sean Anderson <sean.anderson@linux.dev>]

This error message can be triggered by userspace. Use NL_SET_ERR_MSG so
the message is returned to the user and to avoid polluting the kernel
logs. Additionally, change the return value from EFAULT to EBUSY to
better reflect the error (which has nothing to do with addressing).

Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
---

Changes in v2:
- Split off from stats series
- Document return value change

 drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index c29809cd9201..5f98daa5b341 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -1945,9 +1945,9 @@ axienet_ethtools_set_coalesce(struct net_device *ndev,
 	struct axienet_local *lp = netdev_priv(ndev);
 
 	if (netif_running(ndev)) {
-		netdev_err(ndev,
-			   "Please stop netif before applying configuration\n");
-		return -EFAULT;
+		NL_SET_ERR_MSG(extack,
+			       "Please stop netif before applying configuration");
+		return -EBUSY;
 	}
 
 	if (ecoalesce->rx_max_coalesced_frames)
-- 
2.35.1.1320.gc452695387.dirty