From: huhai <huhai@kylinos.cn>
Date: Thu, 23 Jun 2022 13:21:27 +0000 (+0800)
Subject: ACPI: LPSS: Fix missing check in register_device_clock()
X-Git-Tag: v5.10.137~443
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=931d0a574caffeea977ed71c7520a39412ff5db6;p=thirdparty%2Fkernel%2Fstable.git

ACPI: LPSS: Fix missing check in register_device_clock()

[ Upstream commit b4f1f61ed5928b1128e60e38d0dffa16966f06dc ]

register_device_clock() misses a check for platform_device_register_simple().
Add a check to fix it.

Signed-off-by: huhai <huhai@kylinos.cn>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index be73974ce449a..6ff81027c69dd 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -401,6 +401,9 @@ static int register_device_clock(struct acpi_device *adev,
 	if (!lpss_clk_dev)
 		lpt_register_clock_device();
 
+	if (IS_ERR(lpss_clk_dev))
+		return PTR_ERR(lpss_clk_dev);
+
 	clk_data = platform_get_drvdata(lpss_clk_dev);
 	if (!clk_data)
 		return -ENODEV;