On 5/22/20 11:39 AM, Grygorii Strashko wrote:
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
Format for this should be
Fixes: 15180eca569b ("net: ethernet: ti: cpsw: fix vlan mcast")
regards
Suman
Signed-off-by: Grygorii Strashko <grygorii.strashko@xxxxxx>
---
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 c2c5bf87da01..ffeb8633e530 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -1753,11 +1753,15 @@ static int cpsw_suspend(struct device *dev)
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);
