From: Nuno Sá nuno.sa@analog.com
stable inclusion from stable-v5.10.121 commit cc68e53f9a7f1044bc2824987a6e45bcb2f97513 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5L6CQ
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 5f756a2eaa4436d7d3dc1e040147f5e992ae34b5 ]
We should not break overlay notifications on NOTIFY_{OK|STOP} otherwise we might break on the first fragment. We should only stop notifications if a *real* errno is returned by one of the listeners.
Fixes: a1d19bd4cf1fe ("of: overlay: pr_err from return NOTIFY_OK to overlay apply/remove") Signed-off-by: Nuno Sá nuno.sa@analog.com Signed-off-by: Rob Herring robh@kernel.org Link: https://lore.kernel.org/r/20220420130205.89435-1-nuno.sa@analog.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Acked-by: Xie XiuQi xiexiuqi@huawei.com --- drivers/of/overlay.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c index 43a77d720008..c8a0c0e9dec1 100644 --- a/drivers/of/overlay.c +++ b/drivers/of/overlay.c @@ -170,9 +170,7 @@ static int overlay_notify(struct overlay_changeset *ovcs,
ret = blocking_notifier_call_chain(&overlay_notify_chain, action, &nd); - if (ret == NOTIFY_OK || ret == NOTIFY_STOP) - return 0; - if (ret) { + if (notifier_to_errno(ret)) { ret = notifier_to_errno(ret); pr_err("overlay changeset %s notifier error %d, target: %pOF\n", of_overlay_action_name[action], ret, nd.target);