diff --git a/arch/x86/kernel/eisa.c b/arch/x86/kernel/eisa.c
index e8c8c5d78dbd..e963344b0449 100644
--- a/arch/x86/kernel/eisa.c
+++ b/arch/x86/kernel/eisa.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * EISA specific code
- *
- * This file is licensed under the GPL V2
  */
 #include <linux/ioport.h>
 #include <linux/eisa.h>
diff --git a/arch/x86/kernel/idt.c b/arch/x86/kernel/idt.c
index 6d8917875f44..d2482bbbe3d0 100644
--- a/arch/x86/kernel/idt.c
+++ b/arch/x86/kernel/idt.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Interrupt descriptor table related code
- *
- * This file is licensed under the GPL V2
  */
 #include <linux/interrupt.h>
 
diff --git a/drivers/clocksource/acpi_pm.c b/drivers/clocksource/acpi_pm.c
index 1961e3539b57..eb596ff9e7bb 100644
--- a/drivers/clocksource/acpi_pm.c
+++ b/drivers/clocksource/acpi_pm.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/drivers/clocksource/acpi_pm.c
  *
@@ -12,8 +13,6 @@
  *
  * Based on parts of linux/drivers/acpi/hardware/hwtimer.c, timer_pit.c,
  * timer_hpet.c, and on Arjan van de Ven's implementation for 2.4.
- *
- * This file is licensed under the GPL v2.
  */
 
 #include <linux/acpi_pmtmr.h>