korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-11 04:18:39 +08:00
Code Issues Packages Projects Releases Wiki Activity

net: dsa: unregister cross-chip notifier after ds->ops->teardown

Browse Source 
To be symmetric with the error unwind path of dsa_switch_setup(), call
dsa_switch_unregister_notifier() after ds->ops->teardown.

The implication is that ds->ops->teardown cannot emit cross-chip
notifiers. For example, currently the dsa_tag_8021q_unregister() call
from sja1105_teardown() does not propagate to the entire tree due to
this reason. However I cannot find an actual issue caused by this,
observed using code inspection.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20211012123735.2545742-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Vladimir Oltean 2021-10-12 15:37:35 +03:00 committed by Jakub Kicinski
parent 6312d52838
commit 39e222bfd7
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
net/dsa/dsa2.c
View File

@ -924,11 +924,11 @@ static void dsa_switch_teardown(struct dsa_switch *ds)
ds->slave_mii_bus = NULL;
}
dsa_switch_unregister_notifier(ds);
if (ds->ops->teardown)
ds->ops->teardown(ds);
dsa_switch_unregister_notifier(ds);
if (ds->devlink) {
list_for_each_entry(dp, &ds->dst->ports, list)
if (dp->ds == ds)