From: huhai <huhai@kylinos.cn> stable inclusion from stable-v4.19.256 commit 7566bc6556185f14a9b8c42940b7ebd6b2d4aad6 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5Q0SQ CVE: NA -------------------------------- [ 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> Signed-off-by: Yongqiang Liu <liuyongqiang13@huawei.com> --- 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 30ccd94f87d2..b9d407135f94 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; -- 2.25.1