From: Dan Carpenter <dan.carpenter@linaro.org>
To: Icenowy Zheng <uwu@icenowy.me>
Cc: Drew Fustini <fustini@kernel.org>, Guo Ren <guoren@kernel.org>,
Fu Wei <wefu@redhat.com>, Ulf Hansson <ulf.hansson@linaro.org>,
linux-riscv@lists.infradead.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH next] pmdomain: thead: Fix error pointer vs NULL bug in th1520_pd_reboot_init()
Date: Fri, 26 Sep 2025 07:03:29 +0300 [thread overview]
Message-ID: <aNYQkVuVpP3Daq7x@stanley.mountain> (raw)
The devm_auxiliary_device_create() returns NULL on error. It never
returns error pointers. Using PTR_ERR_OR_ZERO() here means the function
always returns success. Replace the PTR_ERR_OR_ZERO() call check with
a NULL check.
Fixes: 64581f41f4c4 ("pmdomain: thead: create auxiliary device for rebooting")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
drivers/pmdomain/thead/th1520-pm-domains.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/pmdomain/thead/th1520-pm-domains.c b/drivers/pmdomain/thead/th1520-pm-domains.c
index 5213994101a5..d7cb9633c7c8 100644
--- a/drivers/pmdomain/thead/th1520-pm-domains.c
+++ b/drivers/pmdomain/thead/th1520-pm-domains.c
@@ -179,8 +179,10 @@ static int th1520_pd_reboot_init(struct device *dev,
struct auxiliary_device *adev;
adev = devm_auxiliary_device_create(dev, "reboot", aon_chan);
+ if (!adev)
+ return -ENODEV;
- return PTR_ERR_OR_ZERO(adev);
+ return 0;
}
static int th1520_pd_probe(struct platform_device *pdev)
--
2.51.0
next reply other threads:[~2025-09-26 4:03 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-26 4:03 Dan Carpenter [this message]
2025-09-26 6:59 ` [PATCH next] pmdomain: thead: Fix error pointer vs NULL bug in th1520_pd_reboot_init() Icenowy Zheng
2025-09-26 12:51 ` Ulf Hansson
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