Otherwise the clocks are not enabled and reading registers will BUG.

Fixes: 1e30b8d755b8 ("net: smsc911x: Make Runtime PM handling more fine-grained")
Suggested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
Changes since v1:
* patch is not a revert but a proper fix this time

 drivers/net/ethernet/smsc/smsc911x.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c
index a2e511912e6a..67cb5eb9c716 100644
--- a/drivers/net/ethernet/smsc/smsc911x.c
+++ b/drivers/net/ethernet/smsc/smsc911x.c
@@ -1838,8 +1838,12 @@ smsc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 static struct net_device_stats *smsc911x_get_stats(struct net_device *dev)
 {
 	struct smsc911x_data *pdata = netdev_priv(dev);
-	smsc911x_tx_update_txcounters(dev);
-	dev->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP);
+
+	if (netif_running(dev)) {
+		smsc911x_tx_update_txcounters(dev);
+		dev->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP);
+	}
+
 	return &dev->stats;
 }
 
-- 
2.30.2

On 3/20/23 02:20, Wolfram Sang wrote:
> Otherwise the clocks are not enabled and reading registers will BUG.
> 
> Fixes: 1e30b8d755b8 ("net: smsc911x: Make Runtime PM handling more fine-grained")
> Suggested-by: Geert Uytterhoeven <geert+renesas@glider.be>
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian

On Mon, Mar 20, 2023 at 10:20:40AM +0100, Wolfram Sang wrote:
> Otherwise the clocks are not enabled and reading registers will BUG.
> 
> Fixes: 1e30b8d755b8 ("net: smsc911x: Make Runtime PM handling more fine-grained")
> Suggested-by: Geert Uytterhoeven <geert+renesas@glider.be>
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

Reviewed-by: Simon Horman <simon.horman@corigine.com>