From: Yang Yingliang <yangyingliang@huawei.com>
To: <linux-kernel@vger.kernel.org>, <linux-usb@vger.kernel.org>
Cc: <heikki.krogerus@linux.intel.com>, <gregkh@linuxfoundation.org>
Subject: [PATCH -next] usb: typec: ucsi: fix return value check in ucsi_acpi_probe()
Date: Mon, 16 May 2022 21:15:27 +0800 [thread overview]
Message-ID: <20220516131527.999909-1-yangyingliang@huawei.com> (raw)
If memremap() fails, it never returns NULL. Replace NULL check
with IS_ERR().
Fixes: cdc3d2abf438 ("usb: typec: ucsi: acpi: Map the mailbox with memremap()")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
drivers/usb/typec/ucsi/ucsi_acpi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/typec/ucsi/ucsi_acpi.c b/drivers/usb/typec/ucsi/ucsi_acpi.c
index 7455e3aff2be..8873c1644a29 100644
--- a/drivers/usb/typec/ucsi/ucsi_acpi.c
+++ b/drivers/usb/typec/ucsi/ucsi_acpi.c
@@ -133,8 +133,8 @@ static int ucsi_acpi_probe(struct platform_device *pdev)
}
ua->base = devm_memremap(&pdev->dev, res->start, resource_size(res), MEMREMAP_WB);
- if (!ua->base)
- return -ENOMEM;
+ if (IS_ERR(ua->base))
+ return PTR_ERR(ua->base);
ret = guid_parse(UCSI_DSM_UUID, &ua->guid);
if (ret)
--
2.25.1
next reply other threads:[~2022-05-16 13:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-16 13:15 Yang Yingliang [this message]
2022-05-17 9:20 ` Sergei Shtylyov
2022-05-17 9:40 ` Heikki Krogerus
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