linux-kernel - [PATCH 5.12 238/677] soc: mediatek: pm-domains: Fix missing error code in scpsys_add

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Date:   Wed, 12 May 2021 16:44:44 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, kernel test robot <lkp@...el.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.12 238/677] soc: mediatek: pm-domains: Fix missing error code in scpsys_add_subdomain()

From: Enric Balletbo i Serra <enric.balletbo@...labora.com>

[ Upstream commit 9950588a45241b0efcfc312ab0e414260ceca709 ]

Adding one power domain in scpsys_add_subdomain is missing to assign an
error code when it fails. Fix that assigning an error code to 'ret',
this also fixes the follwowing smatch warning.

  drivers/soc/mediatek/mtk-pm-domains.c:492 scpsys_add_subdomain() warn: missing error code 'ret'

Fixes: dd65030295e2 ("soc: mediatek: pm-domains: Don't print an error if child domain is deferred")
Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
Link: https://lore.kernel.org/r/20210303091054.796975-1-enric.balletbo@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@...il.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/soc/mediatek/mtk-pm-domains.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-pm-domains.c b/drivers/soc/mediatek/mtk-pm-domains.c
index b7f697666bdd..06aaf03b194c 100644
--- a/drivers/soc/mediatek/mtk-pm-domains.c
+++ b/drivers/soc/mediatek/mtk-pm-domains.c
@@ -487,8 +487,9 @@ static int scpsys_add_subdomain(struct scpsys *scpsys, struct device_node *paren
 
 		child_pd = scpsys_add_one_domain(scpsys, child);
 		if (IS_ERR(child_pd)) {
-			dev_err_probe(scpsys->dev, PTR_ERR(child_pd),
-				      "%pOF: failed to get child domain id\n", child);
+			ret = PTR_ERR(child_pd);
+			dev_err_probe(scpsys->dev, ret, "%pOF: failed to get child domain id\n",
+				      child);
 			goto err_put_node;
 		}
 
-- 
2.30.2