In the function check_acpi_dev(), if it fails to create platform device, the return value is ERR_PTR() or NULL. Thus it must use IS_ERR_OR_NULL to check return value. Fixes: 332e0812 ("intel-vbtn: new driver for Intel Virtual Button") Reported-by: Hulk Robot <hulkci@xxxxxxxxxx> Signed-off-by: Lu Wei <luwei32@xxxxxxxxxx> --- v2->v3 - Modify format drivers/platform/x86/intel-vbtn.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/platform/x86/intel-vbtn.c b/drivers/platform/x86/intel-vbtn.c index b588093..e1aa526 100644 --- a/drivers/platform/x86/intel-vbtn.c +++ b/drivers/platform/x86/intel-vbtn.c @@ -251,7 +251,7 @@ check_acpi_dev(acpi_handle handle, u32 lvl, void *context, void **rv) return AE_OK; if (acpi_match_device_ids(dev, ids) == 0) - if (acpi_create_platform_device(dev, NULL)) + if (!IS_ERR_OR_NULL(acpi_create_platform_device(dev, NULL))) dev_info(&dev->dev, "intel-vbtn: created platform device\n"); -- 2.7.4