linux-kernel - [PATCH] of: overlay: pr_err from return NOTIFY

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Date:   Thu, 19 Oct 2017 14:18:27 -0700
From:   frowand.list@...il.com
To:     Rob Herring <robh+dt@...nel.org>, atull@...nel.org,
        pantelis.antoniou@...sulko.com,
        Pantelis Antoniou <panto@...oniou-consulting.com>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] of: overlay: pr_err from return NOTIFY_OK to overlay apply/remove

From: Frank Rowand <frank.rowand@...y.com>

A device tree overlay notifier can return NOTIFY_OK, NOTIFY_STOP,
or an embedded errno.  overlay_notify() incorrectly reports an
error for NOTIFY_OK.

Reported-by: atull@...nel.org
Signed-off-by: Frank Rowand <frank.rowand@...y.com>
---
 drivers/of/overlay.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c
index c99842bb4b09..f5fce0fea40b 100644
--- a/drivers/of/overlay.c
+++ b/drivers/of/overlay.c
@@ -133,7 +133,7 @@ static int overlay_notify(struct overlay_changeset *ovcs,
 
 		ret = blocking_notifier_call_chain(&overlay_notify_chain,
 						   action, &nd);
-		if (ret == NOTIFY_STOP)
+		if (ret == NOTIFY_OK || ret == NOTIFY_STOP)
 			return 0;
 		if (ret) {
 			ret = notifier_to_errno(ret);
-- 
Frank Rowand <frank.rowand@...y.com>