ACPI: LPSS: Fix missing check in register_device_clock()

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>

diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index fbe0756259c5a72bc962a06363fb201b77a1e0eb..c4d4d21391d7b11e8d072d8e6fd16cf067df94ac 100644 (file)
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -422,6 +422,9 @@ 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;