From: Charles Keepax ckeepax@opensource.cirrus.com
[ Upstream commit 939a5bf7c9b7a1ad9c5d3481c93766a522773531 ]
A recent change added a disable to NAPI into macb_open, this was intended to only happen on the error path but accidentally applies to all paths. This causes NAPI to be disabled on the success path, which leads to the network to no longer functioning.
Fixes: 014406babc1f ("net: cadence: macb: disable NAPI on error") Signed-off-by: Charles Keepax ckeepax@opensource.cirrus.com Tested-by: Corentin Labbe clabbe@baylibre.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/cadence/macb_main.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-)
--- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -2565,15 +2565,14 @@ static int macb_open(struct net_device * if (bp->ptp_info) bp->ptp_info->ptp_init(dev);
+ return 0; + napi_exit: for (q = 0, queue = bp->queues; q < bp->num_queues; ++q, ++queue) napi_disable(&queue->napi); pm_exit: - if (err) { - pm_runtime_put_sync(&bp->pdev->dev); - return err; - } - return 0; + pm_runtime_put_sync(&bp->pdev->dev); + return err; }
static int macb_close(struct net_device *dev)