linux-kernel - [PATCH 2/2] leds: lgm: Fix an error handling path in '__sso_led_dt

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Date:   Sun, 11 Apr 2021 09:45:38 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     pavel@....cz, mallikarjunax.reddy@...ux.intel.com
Cc:     linux-leds@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH 2/2] leds: lgm: Fix an error handling path in '__sso_led_dt_parse()'

If a memory allocation fails, we must free the already allocated resources
before returning.

Fixes: c3987cd2bca3 ("leds: lgm: Add LED controller driver for LGM SoC")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/leds/blink/leds-lgm-sso.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/leds/blink/leds-lgm-sso.c b/drivers/leds/blink/leds-lgm-sso.c
index 3da242d4ce7d..ef632ebabac9 100644
--- a/drivers/leds/blink/leds-lgm-sso.c
+++ b/drivers/leds/blink/leds-lgm-sso.c
@@ -631,8 +631,10 @@ __sso_led_dt_parse(struct sso_led_priv *priv, struct fwnode_handle *fw_ssoled)
 
 	fwnode_for_each_child_node(fw_ssoled, fwnode_child) {
 		led = devm_kzalloc(dev, sizeof(*led), GFP_KERNEL);
-		if (!led)
-			return -ENOMEM;
+		if (!led) {
+			ret = -ENOMEM;
+			goto __dt_err;
+		}
 
 		INIT_LIST_HEAD(&led->list);
 		led->priv = priv;
-- 
2.27.0