[PATCH -next] clocksource/drivers/ingenic_ost: Fix return value check in ingenic_ost_probe()

From: 'Wei Yongjun <weiyongjun1@huawei.com>
To: <weiyongjun1@huawei.com>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Maarten ter Huurne <maarten@treewalker.org>
Cc: <linux-kernel@vger.kernel.org>, <kernel-janitors@vger.kernel.org>,
	"Hulk Robot" <hulkci@huawei.com>
Subject: [PATCH -next] clocksource/drivers/ingenic_ost: Fix return value check in ingenic_ost_probe()
Date: Mon, 8 Mar 2021 12:30:31 +0000	[thread overview]
Message-ID: <20210308123031.2285083-1-weiyongjun1@huawei.com> (raw)

From: Wei Yongjun <weiyongjun1@huawei.com>

In case of error, the function device_node_to_regmap() returns
ERR_PTR() and never returns NULL. The NULL test in the return
value check should be replaced with IS_ERR().

Fixes: ca7b72b5a5f2 ("clocksource: Add driver for the Ingenic JZ47xx OST")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
---
 drivers/clocksource/ingenic-ost.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clocksource/ingenic-ost.c b/drivers/clocksource/ingenic-ost.c
index 029efc2731b4..6af2470136bd 100644
--- a/drivers/clocksource/ingenic-ost.c
+++ b/drivers/clocksource/ingenic-ost.c
@@ -88,9 +88,9 @@ static int __init ingenic_ost_probe(struct platform_device *pdev)
 		return PTR_ERR(ost->regs);
 
 	map = device_node_to_regmap(dev->parent->of_node);
-	if (!map) {
+	if (IS_ERR(map)) {
 		dev_err(dev, "regmap not found");
-		return -EINVAL;
+		return PTR_ERR(map);
 	}
 
 	ost->clk = devm_clk_get(dev, "ost");

