From 4ccfd6383a1a4838ed034120f00d02dbdc681d6f Mon Sep 17 00:00:00 2001 From: Grygorii Strashko Date: Tue, 29 Nov 2016 16:27:03 -0600 Subject: [PATCH] net: ethernet: ti: cpsw: fix ASSERT_RTNL() warning during resume netif_set_real_num_tx/rx_queues() are required to be called with rtnl_lock taken, otherwise ASSERT_RTNL() warning will be triggered - which happens now during System resume from suspend: cpsw_resume() |- cpsw_ndo_open() |- netif_set_real_num_tx/rx_queues() |- ASSERT_RTNL(); Hence, fix it by surrounding cpsw_ndo_open() by rtnl_lock/unlock() calls. Cc: Dave Gerlach Cc: Ivan Khoronzhuk Fixes: commit e05107e6b747 ("net: ethernet: ti: cpsw: add multi queue support") Signed-off-by: Grygorii Strashko Reviewed-by: Ivan Khoronzhuk Tested-by: Dave Gerlach Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/cpsw.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index 9f0646512624..b9087b828eff 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -2930,6 +2930,8 @@ static int cpsw_resume(struct device *dev) /* Select default pin state */ pinctrl_pm_select_default_state(dev); + /* shut up ASSERT_RTNL() warning in netif_set_real_num_tx/rx_queues */ + rtnl_lock(); if (cpsw->data.dual_emac) { int i; @@ -2941,6 +2943,8 @@ static int cpsw_resume(struct device *dev) if (netif_running(ndev)) cpsw_ndo_open(ndev); } + rtnl_unlock(); + return 0; } #endif -- 2.39.5