linux-kernel - [PATCH] pmdomain: Add a null pointer check to the omap_prm_domain

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Message-Id: <20240118054257.200814-1-chentao@kylinos.cn>
Date: Thu, 18 Jan 2024 13:42:57 +0800
From: Kunwu Chan <chentao@...inos.cn>
To: nm@...com,
	ssantosh@...nel.org,
	ulf.hansson@...aro.org
Cc: linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-pm@...r.kernel.org,
	Kunwu Chan <chentao@...inos.cn>
Subject: [PATCH] pmdomain: Add a null pointer check to the omap_prm_domain_init

devm_kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful
by checking the pointer validity.

Signed-off-by: Kunwu Chan <chentao@...inos.cn>
---
 drivers/pmdomain/ti/omap_prm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pmdomain/ti/omap_prm.c b/drivers/pmdomain/ti/omap_prm.c
index c2feae3a634c..b8ceb3c2b81c 100644
--- a/drivers/pmdomain/ti/omap_prm.c
+++ b/drivers/pmdomain/ti/omap_prm.c
@@ -695,6 +695,8 @@ static int omap_prm_domain_init(struct device *dev, struct omap_prm *prm)
 	data = prm->data;
 	name = devm_kasprintf(dev, GFP_KERNEL, "prm_%s",
 			      data->name);
+	if (!name)
+		return -ENOMEM;
 
 	prmd->dev = dev;
 	prmd->prm = prm;
-- 
2.39.2