| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.4 005/142] net: ethernet: ti: cpsw: fix ASSERT_RTNL() warning during suspend | Date | Mon, 1 Jun 2020 19:52:43 +0200 |
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From: Grygorii Strashko <grygorii.strashko@ti.com>
[ Upstream commit 4c64b83d03f4aafcdf710caad994cbc855802e74 ]
vlan_for_each() 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_suspend() |- cpsw_ndo_stop() |- __hw_addr_ref_unsync_dev() |- cpsw_purge_all_mc() |- vlan_for_each() |- ASSERT_RTNL();
Hence, fix it by surrounding cpsw_ndo_stop() by rtnl_lock/unlock() calls.
Fixes: 15180eca569b ("net: ethernet: ti: cpsw: fix vlan mcast") Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/net/ethernet/ti/cpsw.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -2999,11 +2999,15 @@ static int cpsw_suspend(struct device *d struct cpsw_common *cpsw = dev_get_drvdata(dev); int i; + rtnl_lock(); + for (i = 0; i < cpsw->data.slaves; i++) if (cpsw->slaves[i].ndev) if (netif_running(cpsw->slaves[i].ndev)) cpsw_ndo_stop(cpsw->slaves[i].ndev); + rtnl_unlock(); + /* Select sleep pin state */ pinctrl_pm_select_sleep_state(dev);
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