[PATCH 4.14 046/229] ACPI: LPSS: Fix missing check in register_device_clock()

From: Greg Kroah-Hartman
Date: Tue Aug 23 2022 - 05:34:20 EST


From: huhai <huhai@xxxxxxxxxx>

[ 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@xxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/acpi/acpi_lpss.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index 84b1d30f699c..faa83ff03674 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -396,6 +396,9 @@ 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;
--
2.35.1