From 5d24df3d690809952528e7a19a43d84bc5b99d44 Mon Sep 17 00:00:00 2001
From: Miaoqian Lin <linmq006@gmail.com>
Date: Wed, 11 May 2022 15:42:03 +0400
Subject: [PATCH] watchdog: ts4800_wdt: Fix refcount leak in ts4800_wdt_probe
Git-commit: 5d24df3d690809952528e7a19a43d84bc5b99d44
Patch-mainline: v5.19-rc1
References: git-fixes
of_parse_phandle() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.
Add missing of_node_put() in some error paths.
Fixes: bf9006399939 ("watchdog: ts4800: add driver for TS-4800 watchdog")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220511114203.47420-1-linmq006@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/watchdog/ts4800_wdt.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/watchdog/ts4800_wdt.c b/drivers/watchdog/ts4800_wdt.c
index c137ad2bd5c3..0ea554c7cda5 100644
--- a/drivers/watchdog/ts4800_wdt.c
+++ b/drivers/watchdog/ts4800_wdt.c
@@ -125,13 +125,16 @@ static int ts4800_wdt_probe(struct platform_device *pdev)
ret = of_property_read_u32_index(np, "syscon", 1, ®);
if (ret < 0) {
dev_err(dev, "no offset in syscon\n");
+ of_node_put(syscon_np);
return ret;
}
/* allocate memory for watchdog struct */
wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL);
- if (!wdt)
+ if (!wdt) {
+ of_node_put(syscon_np);
return -ENOMEM;
+ }
/* set regmap and offset to know where to write */
wdt->feed_offset = reg;
--
2.35.3