linux-kernel - [PATCH] regmap: debugfs: Fix more error path regressions

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Message-ID: <20200918152212.22200-1-ckeepax@opensource.cirrus.com>
Date:   Fri, 18 Sep 2020 16:22:12 +0100
From:   Charles Keepax <ckeepax@...nsource.cirrus.com>
To:     <broonie@...nel.org>
CC:     <dan.carpenter@...cle.com>, <linux-kernel@...r.kernel.org>,
        <patches@...nsource.cirrus.com>
Subject: [PATCH] regmap: debugfs: Fix more error path regressions

Many error paths in __regmap_init rely on ret being pre-initialised to
-EINVAL, add an extra initialisation in after the new call to
regmap_set_name.

Fixes: 94cc89eb8fa5 ("regmap: debugfs: Fix handling of name string for debugfs init delays")
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Charles Keepax <ckeepax@...nsource.cirrus.com>
---
 drivers/base/regmap/regmap.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index b24f14ea96d8a..4c2a114584236 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -723,6 +723,8 @@ struct regmap *__regmap_init(struct device *dev,
 	if (ret)
 		goto err_map;
 
+	ret = -EINVAL; /* Later error paths rely on this */
+
 	if (config->disable_locking) {
 		map->lock = map->unlock = regmap_lock_unlock_none;
 		map->can_sleep = config->can_sleep;
-- 
2.11.0