gfan_handle 8221 drivers/platform/x86/thinkpad_acpi.c if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) gfan_handle 8803 drivers/platform/x86/thinkpad_acpi.c if (gfan_handle) { gfan_handle 8831 drivers/platform/x86/thinkpad_acpi.c if (!gfan_handle) {