Merge branch 'dts-fixes' into omap-for-v4.15/fixes-dt

160 files changed, 221 insertions, 121 deletions

diff --git a/arch/mips/include/asm/asm-prototypes.h b/arch/mips/include/asm/asm-prototypes.h
index 6e28971fe73a..d60b57f34e92 100644
--- a/arch/mips/include/asm/asm-prototypes.h
+++ b/arch/mips/include/asm/asm-prototypes.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #include <asm/checksum.h>
 #include <asm/page.h>
 #include <asm/fpu.h>
diff --git a/arch/mips/include/asm/asmmacro-32.h b/arch/mips/include/asm/asmmacro-32.h
index 0ef39ad0f2d4..1c08c1f7903c 100644
--- a/arch/mips/include/asm/asmmacro-32.h
+++ b/arch/mips/include/asm/asmmacro-32.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * asmmacro.h: Assembler macros to make things easier to read.
  *
diff --git a/arch/mips/include/asm/asmmacro-64.h b/arch/mips/include/asm/asmmacro-64.h
index 38ea609465b1..68039dee5ba6 100644
--- a/arch/mips/include/asm/asmmacro-64.h
+++ b/arch/mips/include/asm/asmmacro-64.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * asmmacro.h: Assembler macros to make things easier to read.
  *
diff --git a/arch/mips/include/asm/asmmacro.h b/arch/mips/include/asm/asmmacro.h
index 83054f79f72a..feb069cbf44e 100644
--- a/arch/mips/include/asm/asmmacro.h
+++ b/arch/mips/include/asm/asmmacro.h
@@ -19,6 +19,9 @@
 #include <asm/asmmacro-64.h>
 #endif
 
+/* preprocessor replaces the fp in ".set fp=64" with $30 otherwise */
+#undef fp
+
 /*
  * Helper macros for generating raw instruction encodings.
  */
@@ -105,6 +108,7 @@
 	.macro	fpu_save_16odd thread
 	.set	push
 	.set	mips64r2
+	.set	fp=64
 	SET_HARDFLOAT
 	sdc1	$f1,  THREAD_FPR1(\thread)
 	sdc1	$f3,  THREAD_FPR3(\thread)
@@ -126,8 +130,8 @@
 	.endm
 
 	.macro	fpu_save_double thread status tmp
-#if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPS32_R2) || \
-		defined(CONFIG_CPU_MIPS32_R6)
+#if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPSR2) || \
+		defined(CONFIG_CPU_MIPSR6)
 	sll	\tmp, \status, 5
 	bgez	\tmp, 10f
 	fpu_save_16odd \thread
@@ -163,6 +167,7 @@
 	.macro	fpu_restore_16odd thread
 	.set	push
 	.set	mips64r2
+	.set	fp=64
 	SET_HARDFLOAT
 	ldc1	$f1,  THREAD_FPR1(\thread)
 	ldc1	$f3,  THREAD_FPR3(\thread)
@@ -184,8 +189,8 @@
 	.endm
 
 	.macro	fpu_restore_double thread status tmp
-#if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPS32_R2) || \
-		defined(CONFIG_CPU_MIPS32_R6)
+#if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPSR2) || \
+		defined(CONFIG_CPU_MIPSR6)
 	sll	\tmp, \status, 5
 	bgez	\tmp, 10f				# 16 register mode?
 
@@ -234,9 +239,6 @@
 	.endm
 
 #ifdef TOOLCHAIN_SUPPORTS_MSA
-/* preprocessor replaces the fp in ".set fp=64" with $30 otherwise */
-#undef fp
-
 	.macro	_cfcmsa	rd, cs
 	.set	push
 	.set	mips32r2
diff --git a/arch/mips/include/asm/bitops.h b/arch/mips/include/asm/bitops.h
index fa57cef12a46..da1b8718861e 100644
--- a/arch/mips/include/asm/bitops.h
+++ b/arch/mips/include/asm/bitops.h
@@ -456,6 +456,7 @@ static inline void __clear_bit_unlock(unsigned long nr, volatile unsigned long *
 {
 	smp_mb__before_llsc();
 	__clear_bit(nr, addr);
+	nudge_writes();
 }
 
 /*
diff --git a/arch/mips/include/asm/bitrev.h b/arch/mips/include/asm/bitrev.h
index bc739a404ae3..8a2538e08a4e 100644
--- a/arch/mips/include/asm/bitrev.h
+++ b/arch/mips/include/asm/bitrev.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __MIPS_ASM_BITREV_H__
 #define __MIPS_ASM_BITREV_H__
 
diff --git a/arch/mips/include/asm/bmips-spaces.h b/arch/mips/include/asm/bmips-spaces.h
index eb96541ae67e..febc4c30a308 100644
--- a/arch/mips/include/asm/bmips-spaces.h
+++ b/arch/mips/include/asm/bmips-spaces.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_BMIPS_SPACES_H
 #define __ASM_BMIPS_SPACES_H
 
diff --git a/arch/mips/include/asm/bug.h b/arch/mips/include/asm/bug.h
index 540c98a810d1..745dc160a069 100644
--- a/arch/mips/include/asm/bug.h
+++ b/arch/mips/include/asm/bug.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_BUG_H
 #define __ASM_BUG_H
 
diff --git a/arch/mips/include/asm/bugs.h b/arch/mips/include/asm/bugs.h
index b160a706795d..d8ab8b7129b5 100644
--- a/arch/mips/include/asm/bugs.h
+++ b/arch/mips/include/asm/bugs.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * This is included by init/main.c to check for architecture-dependent bugs.
  *
diff --git a/arch/mips/include/asm/clock.h b/arch/mips/include/asm/clock.h
index 4809c29a4890..5a8f96ebe5fa 100644
--- a/arch/mips/include/asm/clock.h
+++ b/arch/mips/include/asm/clock.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MIPS_CLOCK_H
 #define __ASM_MIPS_CLOCK_H
 
diff --git a/arch/mips/include/asm/cmp.h b/arch/mips/include/asm/cmp.h
index 033d97303c85..e9e87504bb0c 100644
--- a/arch/mips/include/asm/cmp.h
+++ b/arch/mips/include/asm/cmp.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_CMP_H
 #define _ASM_CMP_H
 
diff --git a/arch/mips/include/asm/cmpxchg.h b/arch/mips/include/asm/cmpxchg.h
index 903f3bf48419..89e9fb7976fe 100644
--- a/arch/mips/include/asm/cmpxchg.h
+++ b/arch/mips/include/asm/cmpxchg.h
@@ -155,14 +155,16 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
 		return __cmpxchg_small(ptr, old, new, size);
 
 	case 4:
-		return __cmpxchg_asm("ll", "sc", (volatile u32 *)ptr, old, new);
+		return __cmpxchg_asm("ll", "sc", (volatile u32 *)ptr,
+				     (u32)old, new);
 
 	case 8:
 		/* lld/scd are only available for MIPS64 */
 		if (!IS_ENABLED(CONFIG_64BIT))
 			return __cmpxchg_called_with_bad_pointer();
 
-		return __cmpxchg_asm("lld", "scd", (volatile u64 *)ptr, old, new);
+		return __cmpxchg_asm("lld", "scd", (volatile u64 *)ptr,
+				     (u64)old, new);
 
 	default:
 		return __cmpxchg_called_with_bad_pointer();
@@ -202,8 +204,10 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
 #else
 #include <asm-generic/cmpxchg-local.h>
 #define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
+#ifndef CONFIG_SMP
 #define cmpxchg64(ptr, o, n) cmpxchg64_local((ptr), (o), (n))
 #endif
+#endif
 
 #undef __scbeqz
 
diff --git a/arch/mips/include/asm/compat-signal.h b/arch/mips/include/asm/compat-signal.h
index 4c6176467146..c3b7a2550d1d 100644
--- a/arch/mips/include/asm/compat-signal.h
+++ b/arch/mips/include/asm/compat-signal.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_COMPAT_SIGNAL_H
 #define __ASM_COMPAT_SIGNAL_H
 
@@ -13,45 +14,16 @@
 static inline int __copy_conv_sigset_to_user(compat_sigset_t __user *d,
 	const sigset_t *s)
 {
-	int err;
+	BUILD_BUG_ON(sizeof(*d) != sizeof(*s));
+	BUILD_BUG_ON(_NSIG_WORDS != 2);
 
-	BUG_ON(sizeof(*d) != sizeof(*s));
-	BUG_ON(_NSIG_WORDS != 2);
-
-	err  = __put_user(s->sig[0],	   &d->sig[0]);
-	err |= __put_user(s->sig[0] >> 32, &d->sig[1]);
-	err |= __put_user(s->sig[1],	   &d->sig[2]);
-	err |= __put_user(s->sig[1] >> 32, &d->sig[3]);
-
-	return err;
+	return put_compat_sigset(d, s, sizeof(*d));
 }
 
 static inline int __copy_conv_sigset_from_user(sigset_t *d,
 	const compat_sigset_t __user *s)
 {
-	int err;
-	union sigset_u {
-		sigset_t	s;
-		compat_sigset_t c;
-	} *u = (union sigset_u *) d;
-
-	BUG_ON(sizeof(*d) != sizeof(*s));
-	BUG_ON(_NSIG_WORDS != 2);
-
-#ifdef CONFIG_CPU_BIG_ENDIAN
-	err  = __get_user(u->c.sig[1], &s->sig[0]);
-	err |= __get_user(u->c.sig[0], &s->sig[1]);
-	err |= __get_user(u->c.sig[3], &s->sig[2]);
-	err |= __get_user(u->c.sig[2], &s->sig[3]);
-#endif
-#ifdef CONFIG_CPU_LITTLE_ENDIAN
-	err  = __get_user(u->c.sig[0], &s->sig[0]);
-	err |= __get_user(u->c.sig[1], &s->sig[1]);
-	err |= __get_user(u->c.sig[2], &s->sig[2]);
-	err |= __get_user(u->c.sig[3], &s->sig[3]);
-#endif
-
-	return err;
+	return get_compat_sigset(d, s);
 }
 
 #endif /* __ASM_COMPAT_SIGNAL_H */
diff --git a/arch/mips/include/asm/compat.h b/arch/mips/include/asm/compat.h
index a9580097cba8..49691331ada4 100644
--- a/arch/mips/include/asm/compat.h
+++ b/arch/mips/include/asm/compat.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_COMPAT_H
 #define _ASM_COMPAT_H
 /*
@@ -199,7 +200,6 @@ typedef struct compat_siginfo {
 } compat_siginfo_t;
 
 #define COMPAT_OFF_T_MAX	0x7fffffff
-#define COMPAT_LOFF_T_MAX	0x7fffffffffffffffL
 
 /*
  * A pointer passed in from user mode. This should not
diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h
index ece9b84f3bcb..d39324c4adf1 100644
--- a/arch/mips/include/asm/cpu.h
+++ b/arch/mips/include/asm/cpu.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * cpu.h: Values of the PRId register used to match up
  *	  various MIPS cpu types.
diff --git a/arch/mips/include/asm/dma-mapping.h b/arch/mips/include/asm/dma-mapping.h
index aba71385f9d1..0d9418d264f9 100644
--- a/arch/mips/include/asm/dma-mapping.h
+++ b/arch/mips/include/asm/dma-mapping.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_DMA_MAPPING_H
 #define _ASM_DMA_MAPPING_H
 
@@ -26,9 +27,6 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
 
 static inline void dma_mark_clean(void *addr, size_t size) {}
 
-extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
-	       enum dma_data_direction direction);
-
 #define arch_setup_dma_ops arch_setup_dma_ops
 static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base,
 				      u64 size, const struct iommu_ops *iommu,
diff --git a/arch/mips/include/asm/dma.h b/arch/mips/include/asm/dma.h
index 5b9ed1bffdbc..be726b943530 100644
--- a/arch/mips/include/asm/dma.h
+++ b/arch/mips/include/asm/dma.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * linux/include/asm/dma.h: Defines for using and allocating dma channels.
  * Written by Hennus Bergman, 1992.
diff --git a/arch/mips/include/asm/dsemul.h b/arch/mips/include/asm/dsemul.h
index a6e067801f23..b47a97527673 100644
--- a/arch/mips/include/asm/dsemul.h
+++ b/arch/mips/include/asm/dsemul.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2016 Imagination Technologies
- * Author: Paul Burton <paul.burton@imgtec.com>
+ * Author: Paul Burton <paul.burton@mips.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
diff --git a/arch/mips/include/asm/edac.h b/arch/mips/include/asm/edac.h
index 980b16527374..fc467767329b 100644
--- a/arch/mips/include/asm/edac.h
+++ b/arch/mips/include/asm/edac.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef ASM_EDAC_H
 #define ASM_EDAC_H
 
diff --git a/arch/mips/include/asm/extable.h b/arch/mips/include/asm/extable.h
index dce7a627a925..78d0ae156058 100644
--- a/arch/mips/include/asm/extable.h
+++ b/arch/mips/include/asm/extable.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_EXTABLE_H
 #define _ASM_EXTABLE_H
 
diff --git a/arch/mips/include/asm/fw/arc/hinv.h b/arch/mips/include/asm/fw/arc/hinv.h
index 9fac64a26353..d67b6a90f9b3 100644
--- a/arch/mips/include/asm/fw/arc/hinv.h
+++ b/arch/mips/include/asm/fw/arc/hinv.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * ARCS hardware/memory inventory/configuration and system ID definitions.
  */
diff --git a/arch/mips/include/asm/gio_device.h b/arch/mips/include/asm/gio_device.h
index 71a986e9b694..c52948f9ca95 100644
--- a/arch/mips/include/asm/gio_device.h
+++ b/arch/mips/include/asm/gio_device.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #include <linux/device.h>
 #include <linux/mod_devicetable.h>
 
diff --git a/arch/mips/include/asm/highmem.h b/arch/mips/include/asm/highmem.h
index 279b6d14ffeb..9d84aafc33d0 100644
--- a/arch/mips/include/asm/highmem.h
+++ b/arch/mips/include/asm/highmem.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * highmem.h: virtual kernel memory mappings for high memory
  *
diff --git a/arch/mips/include/asm/hpet.h b/arch/mips/include/asm/hpet.h
index 18a8f778bfaa..d47268eceabc 100644
--- a/arch/mips/include/asm/hpet.h
+++ b/arch/mips/include/asm/hpet.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_HPET_H
 #define _ASM_HPET_H
 
diff --git a/arch/mips/include/asm/idle.h b/arch/mips/include/asm/idle.h
index a2d18ab57ac6..655a6dbc861a 100644
--- a/arch/mips/include/asm/idle.h
+++ b/arch/mips/include/asm/idle.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_IDLE_H
 #define __ASM_IDLE_H
 
diff --git a/arch/mips/include/asm/isadep.h b/arch/mips/include/asm/isadep.h
index b4af6eb24ab9..d1683202399b 100644
--- a/arch/mips/include/asm/isadep.h
+++ b/arch/mips/include/asm/isadep.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Various ISA level dependent constants.
  * Most of the following constants reflect the different layout
diff --git a/arch/mips/include/asm/jazzdma.h b/arch/mips/include/asm/jazzdma.h
index 2cefc3c47241..d913439c738c 100644
--- a/arch/mips/include/asm/jazzdma.h
+++ b/arch/mips/include/asm/jazzdma.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Helpfile for jazzdma.c -- Mips Jazz R4030 DMA controller support
  */
diff --git a/arch/mips/include/asm/kdebug.h b/arch/mips/include/asm/kdebug.h
index 8e3d08e739c1..a55a207cfaa3 100644
--- a/arch/mips/include/asm/kdebug.h
+++ b/arch/mips/include/asm/kdebug.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_MIPS_KDEBUG_H
 #define _ASM_MIPS_KDEBUG_H
 
diff --git a/arch/mips/include/asm/kgdb.h b/arch/mips/include/asm/kgdb.h
index 69dc0df94a96..4f2302267deb 100644
--- a/arch/mips/include/asm/kgdb.h
+++ b/arch/mips/include/asm/kgdb.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_KGDB_H_
 #define __ASM_KGDB_H_
 
diff --git a/arch/mips/include/asm/kmap_types.h b/arch/mips/include/asm/kmap_types.h
index c1909dcada39..16665dc2431b 100644
--- a/arch/mips/include/asm/kmap_types.h
+++ b/arch/mips/include/asm/kmap_types.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_KMAP_TYPES_H
 #define _ASM_KMAP_TYPES_H
 
diff --git a/arch/mips/include/asm/kvm_para.h b/arch/mips/include/asm/kvm_para.h
index 5a9aa918abe6..60b1aa0b7014 100644
--- a/arch/mips/include/asm/kvm_para.h
+++ b/arch/mips/include/asm/kvm_para.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_MIPS_KVM_PARA_H
 #define _ASM_MIPS_KVM_PARA_H
 
diff --git a/arch/mips/include/asm/lasat/ds1603.h b/arch/mips/include/asm/lasat/ds1603.h
index edcd7544b358..ab833be9637d 100644
--- a/arch/mips/include/asm/lasat/ds1603.h
+++ b/arch/mips/include/asm/lasat/ds1603.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #include <asm/addrspace.h>
 
 /* Lasat 100	*/
diff --git a/arch/mips/include/asm/lasat/eeprom.h b/arch/mips/include/asm/lasat/eeprom.h
index d918b822e376..24001a5cbb11 100644
--- a/arch/mips/include/asm/lasat/eeprom.h
+++ b/arch/mips/include/asm/lasat/eeprom.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #include <asm/addrspace.h>
 
 /* lasat 100 */
diff --git a/arch/mips/include/asm/lasat/head.h b/arch/mips/include/asm/lasat/head.h
index f5589f31a197..20b0ecedd4b5 100644
--- a/arch/mips/include/asm/lasat/head.h
+++ b/arch/mips/include/asm/lasat/head.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Image header stuff
  */
diff --git a/arch/mips/include/asm/lasat/lasatint.h b/arch/mips/include/asm/lasat/lasatint.h
index e0d2458b43d0..b2b346e0ca38 100644
--- a/arch/mips/include/asm/lasat/lasatint.h
+++ b/arch/mips/include/asm/lasat/lasatint.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_LASAT_LASATINT_H
 #define __ASM_LASAT_LASATINT_H
 
diff --git a/arch/mips/include/asm/lasat/picvue.h b/arch/mips/include/asm/lasat/picvue.h
index 42a492edc40e..99987c5a4b83 100644
--- a/arch/mips/include/asm/lasat/picvue.h
+++ b/arch/mips/include/asm/lasat/picvue.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* Lasat 100 */
 #define PVC_REG_100		KSEG1ADDR(0x1c820000)
 #define PVC_DATA_SHIFT_100	0
diff --git a/arch/mips/include/asm/lasat/serial.h b/arch/mips/include/asm/lasat/serial.h
index a2f6c7a9cfe8..7b43d74089d1 100644
--- a/arch/mips/include/asm/lasat/serial.h
+++ b/arch/mips/include/asm/lasat/serial.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #include <asm/lasat/lasat.h>
 
 /* Lasat 100 boards serial configuration */
diff --git a/arch/mips/include/asm/linkage.h b/arch/mips/include/asm/linkage.h
index 99651b0ea7c7..1829c2b6da6c 100644
--- a/arch/mips/include/asm/linkage.h
+++ b/arch/mips/include/asm/linkage.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_LINKAGE_H
 #define __ASM_LINKAGE_H
 
diff --git a/arch/mips/include/asm/local.h b/arch/mips/include/asm/local.h
index 8feaed62a2ab..ac8264eca1e9 100644
--- a/arch/mips/include/asm/local.h
+++ b/arch/mips/include/asm/local.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ARCH_MIPS_LOCAL_H
 #define _ARCH_MIPS_LOCAL_H
 
diff --git a/arch/mips/include/asm/m48t37.h b/arch/mips/include/asm/m48t37.h
index e6eaf5339e4e..3687a02e692b 100644
--- a/arch/mips/include/asm/m48t37.h
+++ b/arch/mips/include/asm/m48t37.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  *  Registers for the SGS-Thomson M48T37 Timekeeper RAM chip
  */
diff --git a/arch/mips/include/asm/maar.h b/arch/mips/include/asm/maar.h
index e10f78befbd9..1e0da80bba13 100644
--- a/arch/mips/include/asm/maar.h
+++ b/arch/mips/include/asm/maar.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2014 Imagination Technologies
- * Author: Paul Burton <paul.burton@imgtec.com>
+ * Author: Paul Burton <paul.burton@mips.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
diff --git a/arch/mips/include/asm/mach-ath25/ath25_platform.h b/arch/mips/include/asm/mach-ath25/ath25_platform.h
index 4f4ee4f9e5ec..0aacc55aa51d 100644
--- a/arch/mips/include/asm/mach-ath25/ath25_platform.h
+++ b/arch/mips/include/asm/mach-ath25/ath25_platform.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_ATH25_PLATFORM_H
 #define __ASM_MACH_ATH25_PLATFORM_H
 
diff --git a/arch/mips/include/asm/mach-au1x00/au1200fb.h b/arch/mips/include/asm/mach-au1x00/au1200fb.h
index b3c87cc64bb9..e0e98f06c642 100644
--- a/arch/mips/include/asm/mach-au1x00/au1200fb.h
+++ b/arch/mips/include/asm/mach-au1x00/au1200fb.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * platform data for au1200fb driver.
  */
diff --git a/arch/mips/include/asm/mach-au1x00/au1550_spi.h b/arch/mips/include/asm/mach-au1x00/au1550_spi.h
index 08e1958e9410..fe6ca4606d77 100644
--- a/arch/mips/include/asm/mach-au1x00/au1550_spi.h
+++ b/arch/mips/include/asm/mach-au1x00/au1550_spi.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * au1550_spi.h - Au1550 PSC SPI controller driver - platform data structure
  */
diff --git a/arch/mips/include/asm/mach-au1x00/au1550nd.h b/arch/mips/include/asm/mach-au1x00/au1550nd.h
index ad4c0a03afef..d26dc1dadf44 100644
--- a/arch/mips/include/asm/mach-au1x00/au1550nd.h
+++ b/arch/mips/include/asm/mach-au1x00/au1550nd.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * platform data for the Au1550 NAND driver
  */
diff --git a/arch/mips/include/asm/mach-au1x00/au1xxx_eth.h b/arch/mips/include/asm/mach-au1x00/au1xxx_eth.h
index 49dc8d9db186..9d1c8d5ed4a8 100644
--- a/arch/mips/include/asm/mach-au1x00/au1xxx_eth.h
+++ b/arch/mips/include/asm/mach-au1x00/au1xxx_eth.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __AU1X00_ETH_DATA_H
 #define __AU1X00_ETH_DATA_H
 
diff --git a/arch/mips/include/asm/mach-au1x00/gpio-au1300.h b/arch/mips/include/asm/mach-au1x00/gpio-au1300.h
index d607d643b973..d25846a1291f 100644
--- a/arch/mips/include/asm/mach-au1x00/gpio-au1300.h
+++ b/arch/mips/include/asm/mach-au1x00/gpio-au1300.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * gpio-au1300.h -- GPIO control for Au1300 GPIC and compatibles.
  *
diff --git a/arch/mips/include/asm/mach-au1x00/prom.h b/arch/mips/include/asm/mach-au1x00/prom.h
index 4c0e09cf1735..c62ee0246d76 100644
--- a/arch/mips/include/asm/mach-au1x00/prom.h
+++ b/arch/mips/include/asm/mach-au1x00/prom.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __AU1X00_PROM_H
 #define __AU1X00_PROM_H
 
diff --git a/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h b/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
index ee3d4fe515a0..cbf9da7f2f94 100644
--- a/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
+++ b/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __BCM47XX_BOARD_H
 #define __BCM47XX_BOARD_H
 
diff --git a/arch/mips/include/asm/mach-bcm47xx/cpu-feature-overrides.h b/arch/mips/include/asm/mach-bcm47xx/cpu-feature-overrides.h
index b7992cd4aaf9..b23ff47ea475 100644
--- a/arch/mips/include/asm/mach-bcm47xx/cpu-feature-overrides.h
+++ b/arch/mips/include/asm/mach-bcm47xx/cpu-feature-overrides.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_BCM47XX_CPU_FEATURE_OVERRIDES_H
 #define __ASM_MACH_BCM47XX_CPU_FEATURE_OVERRIDES_H
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_board.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_board.h
index fa3e7e617b09..1d19a726f86c 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_board.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_board.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_BOARD_H_
 #define BCM63XX_BOARD_H_
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h
index 56bb19219d48..1cad18e6681d 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_CPU_H_
 #define BCM63XX_CPU_H_
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cs.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cs.h
index b1821c866e53..1c634d7c1597 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cs.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cs.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_CS_H
 #define BCM63XX_CS_H
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_dsp.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_dsp.h
index b587d45c3045..4e4970787371 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_dsp.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_dsp.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __BCM63XX_DSP_H
 #define __BCM63XX_DSP_H
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_enet.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_enet.h
index c4e856f27040..c0bd47444cff 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_enet.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_enet.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_DEV_ENET_H_
 #define BCM63XX_DEV_ENET_H_
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_flash.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_flash.h
index 354b8481ec4a..4d5005f2b8b5 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_flash.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_flash.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __BCM63XX_FLASH_H
 #define __BCM63XX_FLASH_H
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_hsspi.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_hsspi.h
index 1b1acafb3d79..f93f176c1bee 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_hsspi.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_hsspi.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_DEV_HSSPI_H
 #define BCM63XX_DEV_HSSPI_H
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pci.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pci.h
index c549344b70ad..1951c125cf0e 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pci.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pci.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_DEV_PCI_H_
 #define BCM63XX_DEV_PCI_H_
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pcmcia.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pcmcia.h
index 2beb3969ce3b..01674ac58bb5 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pcmcia.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_pcmcia.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_DEV_PCMCIA_H_
 #define BCM63XX_DEV_PCMCIA_H_
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h
index dd299548860d..0ab750522324 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_DEV_SPI_H
 #define BCM63XX_DEV_SPI_H
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_uart.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_uart.h
index 23c705baf171..88f8cf1c7094 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_uart.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_uart.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_DEV_UART_H_
 #define BCM63XX_DEV_UART_H_
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_usb_usbd.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_usb_usbd.h
index 5d6d6986f40b..3f920baff966 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_usb_usbd.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_usb_usbd.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_DEV_USB_USBD_H_
 #define BCM63XX_DEV_USB_USBD_H_
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_gpio.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_gpio.h
index 565ff36a1119..8fe88c2251e4 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_gpio.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_gpio.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_GPIO_H
 #define BCM63XX_GPIO_H
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_io.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_io.h
index 7033144aab2d..31c692433ada 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_io.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_io.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_IO_H_
 #define BCM63XX_IO_H_
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_irq.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_irq.h
index 0c3074b871b8..7887bc6905f5 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_irq.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_irq.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_IRQ_H_
 #define BCM63XX_IRQ_H_
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_iudma.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_iudma.h
index 1e89df7244bd..73df916e414d 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_iudma.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_iudma.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_IUDMA_H_
 #define BCM63XX_IUDMA_H_
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_nvram.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_nvram.h
index 348df49dcc9f..f78d725f263f 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_nvram.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_nvram.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_NVRAM_H
 #define BCM63XX_NVRAM_H
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
index 24080af570f9..bc3444cd4ef2 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_REGS_H_
 #define BCM63XX_REGS_H_
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_reset.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_reset.h
index 3a6eb9c1adc6..2c0645b7da84 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_reset.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_reset.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __BCM63XX_RESET_H
 #define __BCM63XX_RESET_H
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_timer.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_timer.h
index c0fce833c9ed..bcbece793fd8 100644
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_timer.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_timer.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_TIMER_H_
 #define BCM63XX_TIMER_H_
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h b/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
index b86a0efba665..5e5b1bc4a324 100644
--- a/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
+++ b/arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BOARD_BCM963XX_H_
 #define BOARD_BCM963XX_H_
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/cpu-feature-overrides.h b/arch/mips/include/asm/mach-bcm63xx/cpu-feature-overrides.h
index b56cf10b91d3..0ebecbdb9749 100644
--- a/arch/mips/include/asm/mach-bcm63xx/cpu-feature-overrides.h
+++ b/arch/mips/include/asm/mach-bcm63xx/cpu-feature-overrides.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_BCM963XX_CPU_FEATURE_OVERRIDES_H
 #define __ASM_MACH_BCM963XX_CPU_FEATURE_OVERRIDES_H
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/ioremap.h b/arch/mips/include/asm/mach-bcm63xx/ioremap.h
index aea6e64b828f..8cd261ec0a75 100644
--- a/arch/mips/include/asm/mach-bcm63xx/ioremap.h
+++ b/arch/mips/include/asm/mach-bcm63xx/ioremap.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef BCM63XX_IOREMAP_H_
 #define BCM63XX_IOREMAP_H_
 
diff --git a/arch/mips/include/asm/mach-bcm63xx/irq.h b/arch/mips/include/asm/mach-bcm63xx/irq.h
index 2bbfc8d1f307..b016f0615d5f 100644
--- a/arch/mips/include/asm/mach-bcm63xx/irq.h
+++ b/arch/mips/include/asm/mach-bcm63xx/irq.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_BCM63XX_IRQ_H
 #define __ASM_MACH_BCM63XX_IRQ_H
 
diff --git a/arch/mips/include/asm/mach-bmips/cpu-feature-overrides.h b/arch/mips/include/asm/mach-bmips/cpu-feature-overrides.h
index fa0583e1ce0d..68a219d80407 100644
--- a/arch/mips/include/asm/mach-bmips/cpu-feature-overrides.h
+++ b/arch/mips/include/asm/mach-bmips/cpu-feature-overrides.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_BMIPS_CPU_FEATURE_OVERRIDES_H
 #define __ASM_MACH_BMIPS_CPU_FEATURE_OVERRIDES_H
 
diff --git a/arch/mips/include/asm/mach-bmips/ioremap.h b/arch/mips/include/asm/mach-bmips/ioremap.h
index 29c7a7bb7080..52632ebc705f 100644
--- a/arch/mips/include/asm/mach-bmips/ioremap.h
+++ b/arch/mips/include/asm/mach-bmips/ioremap.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_BMIPS_IOREMAP_H
 #define __ASM_MACH_BMIPS_IOREMAP_H
 
diff --git a/arch/mips/include/asm/mach-db1x00/bcsr.h b/arch/mips/include/asm/mach-db1x00/bcsr.h
index 3c3ed4ae45e2..4a27738e8b22 100644
--- a/arch/mips/include/asm/mach-db1x00/bcsr.h
+++ b/arch/mips/include/asm/mach-db1x00/bcsr.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * bcsr.h -- Db1xxx/Pb1xxx Devboard CPLD registers ("BCSR") abstraction.
  *
diff --git a/arch/mips/include/asm/mach-generic/kmalloc.h b/arch/mips/include/asm/mach-generic/kmalloc.h
index a5d669086ed9..74207c7bd00d 100644
--- a/arch/mips/include/asm/mach-generic/kmalloc.h
+++ b/arch/mips/include/asm/mach-generic/kmalloc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_GENERIC_KMALLOC_H
 #define __ASM_MACH_GENERIC_KMALLOC_H
 
diff --git a/arch/mips/include/asm/mach-ip27/mmzone.h b/arch/mips/include/asm/mach-ip27/mmzone.h
index ebc9377ff876..2ed3094dee07 100644
--- a/arch/mips/include/asm/mach-ip27/mmzone.h
+++ b/arch/mips/include/asm/mach-ip27/mmzone.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_MACH_MMZONE_H
 #define _ASM_MACH_MMZONE_H
 
diff --git a/arch/mips/include/asm/mach-ip27/topology.h b/arch/mips/include/asm/mach-ip27/topology.h
index 3fb7a0e09494..42ea1313626c 100644
--- a/arch/mips/include/asm/mach-ip27/topology.h
+++ b/arch/mips/include/asm/mach-ip27/topology.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_MACH_TOPOLOGY_H
 #define _ASM_MACH_TOPOLOGY_H	1
 
diff --git a/arch/mips/include/asm/mach-ip32/kmalloc.h b/arch/mips/include/asm/mach-ip32/kmalloc.h
index 042ca926c48f..07a0146ea61f 100644
--- a/arch/mips/include/asm/mach-ip32/kmalloc.h
+++ b/arch/mips/include/asm/mach-ip32/kmalloc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_IP32_KMALLOC_H
 #define __ASM_MACH_IP32_KMALLOC_H
 
diff --git a/arch/mips/include/asm/mach-jz4740/base.h b/arch/mips/include/asm/mach-jz4740/base.h
index f37318605452..96b2d6674cdb 100644
--- a/arch/mips/include/asm/mach-jz4740/base.h
+++ b/arch/mips/include/asm/mach-jz4740/base.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_JZ4740_BASE_H__
 #define __ASM_MACH_JZ4740_BASE_H__
 
diff --git a/arch/mips/include/asm/mach-jz4740/jz4740_mmc.h b/arch/mips/include/asm/mach-jz4740/jz4740_mmc.h
index 8543f432b4b3..e9cc62cfac99 100644
--- a/arch/mips/include/asm/mach-jz4740/jz4740_mmc.h
+++ b/arch/mips/include/asm/mach-jz4740/jz4740_mmc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __LINUX_MMC_JZ4740_MMC
 #define __LINUX_MMC_JZ4740_MMC
 
diff --git a/arch/mips/include/asm/mach-lasat/irq.h b/arch/mips/include/asm/mach-lasat/irq.h
index 3a282419d5f9..d79cbe075084 100644
--- a/arch/mips/include/asm/mach-lasat/irq.h
+++ b/arch/mips/include/asm/mach-lasat/irq.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_MACH_LASAT_IRQ_H
 #define _ASM_MACH_LASAT_IRQ_H
 
diff --git a/arch/mips/include/asm/mach-lasat/mach-gt64120.h b/arch/mips/include/asm/mach-lasat/mach-gt64120.h
index c253d3fa5167..6666a8871a23 100644
--- a/arch/mips/include/asm/mach-lasat/mach-gt64120.h
+++ b/arch/mips/include/asm/mach-lasat/mach-gt64120.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  *  This is a direct copy of the ev96100.h file, with a global
  * search and replace.	The numbers are the same.
diff --git a/arch/mips/include/asm/mach-loongson64/boot_param.h b/arch/mips/include/asm/mach-loongson64/boot_param.h
index 9f9bb9c53785..4f69f08717f6 100644
--- a/arch/mips/include/asm/mach-loongson64/boot_param.h
+++ b/arch/mips/include/asm/mach-loongson64/boot_param.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_LOONGSON64_BOOT_PARAM_H_
 #define __ASM_MACH_LOONGSON64_BOOT_PARAM_H_
 
diff --git a/arch/mips/include/asm/mach-loongson64/cs5536/cs5536.h b/arch/mips/include/asm/mach-loongson64/cs5536/cs5536.h
index a0ee0cb775ad..9795b3361532 100644
--- a/arch/mips/include/asm/mach-loongson64/cs5536/cs5536.h
+++ b/arch/mips/include/asm/mach-loongson64/cs5536/cs5536.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * The header file of cs5536 south bridge.
  *
diff --git a/arch/mips/include/asm/mach-loongson64/cs5536/cs5536_mfgpt.h b/arch/mips/include/asm/mach-loongson64/cs5536/cs5536_mfgpt.h
index 021d0172dad6..52e8bb0fc04d 100644
--- a/arch/mips/include/asm/mach-loongson64/cs5536/cs5536_mfgpt.h
+++ b/arch/mips/include/asm/mach-loongson64/cs5536/cs5536_mfgpt.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * cs5536 mfgpt header file
  */
diff --git a/arch/mips/include/asm/mach-loongson64/cs5536/cs5536_pci.h b/arch/mips/include/asm/mach-loongson64/cs5536/cs5536_pci.h
index bf9dd9eb4ceb..a0d4b752899e 100644
--- a/arch/mips/include/asm/mach-loongson64/cs5536/cs5536_pci.h
+++ b/arch/mips/include/asm/mach-loongson64/cs5536/cs5536_pci.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * the definition file of cs5536 Virtual Support Module(VSM).
  * pci configuration space can be accessed through the VSM, so
diff --git a/arch/mips/include/asm/mach-loongson64/cs5536/cs5536_vsm.h b/arch/mips/include/asm/mach-loongson64/cs5536/cs5536_vsm.h
index 1f17c1815ee5..70d0153cccc3 100644
--- a/arch/mips/include/asm/mach-loongson64/cs5536/cs5536_vsm.h
+++ b/arch/mips/include/asm/mach-loongson64/cs5536/cs5536_vsm.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * the read/write interfaces for Virtual Support Module(VSM)
  *
diff --git a/arch/mips/include/asm/mach-loongson64/irq.h b/arch/mips/include/asm/mach-loongson64/irq.h
index d18c45c7c394..3644b68c0ccc 100644
--- a/arch/mips/include/asm/mach-loongson64/irq.h
+++ b/arch/mips/include/asm/mach-loongson64/irq.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_LOONGSON64_IRQ_H_
 #define __ASM_MACH_LOONGSON64_IRQ_H_
 
diff --git a/arch/mips/include/asm/mach-loongson64/loongson_hwmon.h b/arch/mips/include/asm/mach-loongson64/loongson_hwmon.h
index 74230d0ca98b..545f91f2ae16 100644
--- a/arch/mips/include/asm/mach-loongson64/loongson_hwmon.h
+++ b/arch/mips/include/asm/mach-loongson64/loongson_hwmon.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __LOONGSON_HWMON_H_
 #define __LOONGSON_HWMON_H_
 
diff --git a/arch/mips/include/asm/mach-loongson64/spaces.h b/arch/mips/include/asm/mach-loongson64/spaces.h
index c6040b9fcf94..e85bc1d9c4f2 100644
--- a/arch/mips/include/asm/mach-loongson64/spaces.h
+++ b/arch/mips/include/asm/mach-loongson64/spaces.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_LOONGSON64_SPACES_H_
 #define __ASM_MACH_LOONGSON64_SPACES_H_
 
diff --git a/arch/mips/include/asm/mach-loongson64/topology.h b/arch/mips/include/asm/mach-loongson64/topology.h
index bcb885615fca..7ff819ab308a 100644
--- a/arch/mips/include/asm/mach-loongson64/topology.h
+++ b/arch/mips/include/asm/mach-loongson64/topology.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_MACH_TOPOLOGY_H
 #define _ASM_MACH_TOPOLOGY_H
 
diff --git a/arch/mips/include/asm/mach-loongson64/workarounds.h b/arch/mips/include/asm/mach-loongson64/workarounds.h
index e659f041e116..17b71172a097 100644
--- a/arch/mips/include/asm/mach-loongson64/workarounds.h
+++ b/arch/mips/include/asm/mach-loongson64/workarounds.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_LOONGSON64_WORKAROUNDS_H_
 #define __ASM_MACH_LOONGSON64_WORKAROUNDS_H_
 
diff --git a/arch/mips/include/asm/mach-malta/irq.h b/arch/mips/include/asm/mach-malta/irq.h
index 47cfe64efbb0..af9eeea250ed 100644
--- a/arch/mips/include/asm/mach-malta/irq.h
+++ b/arch/mips/include/asm/mach-malta/irq.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_MIPS_IRQ_H
 #define __ASM_MACH_MIPS_IRQ_H
 
diff --git a/arch/mips/include/asm/mach-malta/mach-gt64120.h b/arch/mips/include/asm/mach-malta/mach-gt64120.h
index 62a4b2889fa7..b9dee7c3e469 100644
--- a/arch/mips/include/asm/mach-malta/mach-gt64120.h
+++ b/arch/mips/include/asm/mach-malta/mach-gt64120.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  *  This is a direct copy of the ev96100.h file, with a global
  * search and replace.	The numbers are the same.
diff --git a/arch/mips/include/asm/mach-malta/malta-dtshim.h b/arch/mips/include/asm/mach-malta/malta-dtshim.h
index cfd777663c64..d696a7598ea7 100644
--- a/arch/mips/include/asm/mach-malta/malta-dtshim.h
+++ b/arch/mips/include/asm/mach-malta/malta-dtshim.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2015 Imagination Technologies
- * Author: Paul Burton <paul.burton@imgtec.com>
+ * Author: Paul Burton <paul.burton@mips.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
diff --git a/arch/mips/include/asm/mach-malta/malta-pm.h b/arch/mips/include/asm/mach-malta/malta-pm.h
index c2c2e201013d..347b53dbc88f 100644
--- a/arch/mips/include/asm/mach-malta/malta-pm.h
+++ b/arch/mips/include/asm/mach-malta/malta-pm.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2014 Imagination Technologies
- * Author: Paul Burton <paul.burton@imgtec.com>
+ * Author: Paul Burton <paul.burton@mips.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
diff --git a/arch/mips/include/asm/mach-ralink/irq.h b/arch/mips/include/asm/mach-ralink/irq.h
index 4321865e04b9..86473e3999aa 100644
--- a/arch/mips/include/asm/mach-ralink/irq.h
+++ b/arch/mips/include/asm/mach-ralink/irq.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_RALINK_IRQ_H
 #define __ASM_MACH_RALINK_IRQ_H
 
diff --git a/arch/mips/include/asm/mach-rc32434/dma.h b/arch/mips/include/asm/mach-rc32434/dma.h
index 4322191e46bf..44dc87bb8087 100644
--- a/arch/mips/include/asm/mach-rc32434/dma.h
+++ b/arch/mips/include/asm/mach-rc32434/dma.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright 2002 Integrated Device Technology, Inc.
  *		All rights reserved.
diff --git a/arch/mips/include/asm/mach-rc32434/dma_v.h b/arch/mips/include/asm/mach-rc32434/dma_v.h
index 28c54063a345..37d73b9877c6 100644
--- a/arch/mips/include/asm/mach-rc32434/dma_v.h
+++ b/arch/mips/include/asm/mach-rc32434/dma_v.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright 2002 Integrated Device Technology, Inc.
  *		All rights reserved.
diff --git a/arch/mips/include/asm/mach-rc32434/gpio.h b/arch/mips/include/asm/mach-rc32434/gpio.h
index db211212ce79..a3192da9f227 100644
--- a/arch/mips/include/asm/mach-rc32434/gpio.h
+++ b/arch/mips/include/asm/mach-rc32434/gpio.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright 2002 Integrated Device Technology, Inc.
  *	All rights reserved.
diff --git a/arch/mips/include/asm/mach-rc32434/irq.h b/arch/mips/include/asm/mach-rc32434/irq.h
index b76dec95c04e..ebe32bd5a5fb 100644
--- a/arch/mips/include/asm/mach-rc32434/irq.h
+++ b/arch/mips/include/asm/mach-rc32434/irq.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_RC32434_IRQ_H
 #define __ASM_RC32434_IRQ_H
 
diff --git a/arch/mips/include/asm/mach-rc32434/rc32434.h b/arch/mips/include/asm/mach-rc32434/rc32434.h
index 02fd32b4be16..1bec6cc8abf0 100644
--- a/arch/mips/include/asm/mach-rc32434/rc32434.h
+++ b/arch/mips/include/asm/mach-rc32434/rc32434.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Definitions for IDT RC323434 CPU.
  */
diff --git a/arch/mips/include/asm/mach-tx39xx/mangle-port.h b/arch/mips/include/asm/mach-tx39xx/mangle-port.h
index ef0b502fd8b7..ab7a70bd895e 100644
--- a/arch/mips/include/asm/mach-tx39xx/mangle-port.h
+++ b/arch/mips/include/asm/mach-tx39xx/mangle-port.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_TX39XX_MANGLE_PORT_H
 #define __ASM_MACH_TX39XX_MANGLE_PORT_H
 
diff --git a/arch/mips/include/asm/mach-tx49xx/cpu-feature-overrides.h b/arch/mips/include/asm/mach-tx49xx/cpu-feature-overrides.h
index b9d39dc45420..04e4247255da 100644
--- a/arch/mips/include/asm/mach-tx49xx/cpu-feature-overrides.h
+++ b/arch/mips/include/asm/mach-tx49xx/cpu-feature-overrides.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_TX49XX_CPU_FEATURE_OVERRIDES_H
 #define __ASM_MACH_TX49XX_CPU_FEATURE_OVERRIDES_H
 
diff --git a/arch/mips/include/asm/mach-tx49xx/kmalloc.h b/arch/mips/include/asm/mach-tx49xx/kmalloc.h
index ff9a8b86cb93..c2a0a6fa483f 100644
--- a/arch/mips/include/asm/mach-tx49xx/kmalloc.h
+++ b/arch/mips/include/asm/mach-tx49xx/kmalloc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_TX49XX_KMALLOC_H
 #define __ASM_MACH_TX49XX_KMALLOC_H
 
diff --git a/arch/mips/include/asm/mach-tx49xx/mangle-port.h b/arch/mips/include/asm/mach-tx49xx/mangle-port.h
index 490867b03c8f..e061ef38fb5f 100644
--- a/arch/mips/include/asm/mach-tx49xx/mangle-port.h
+++ b/arch/mips/include/asm/mach-tx49xx/mangle-port.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_TX49XX_MANGLE_PORT_H
 #define __ASM_MACH_TX49XX_MANGLE_PORT_H
 
diff --git a/arch/mips/include/asm/mach-vr41xx/irq.h b/arch/mips/include/asm/mach-vr41xx/irq.h
index 862058d3f81b..3d63afae37a8 100644
--- a/arch/mips/include/asm/mach-vr41xx/irq.h
+++ b/arch/mips/include/asm/mach-vr41xx/irq.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MACH_VR41XX_IRQ_H
 #define __ASM_MACH_VR41XX_IRQ_H
 
diff --git a/arch/mips/include/asm/machine.h b/arch/mips/include/asm/machine.h
index ecb6c7335484..e0d9b373d415 100644
--- a/arch/mips/include/asm/machine.h
+++ b/arch/mips/include/asm/machine.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2016 Imagination Technologies
- * Author: Paul Burton <paul.burton@imgtec.com>
+ * Author: Paul Burton <paul.burton@mips.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
diff --git a/arch/mips/include/asm/mips-boards/launch.h b/arch/mips/include/asm/mips-boards/launch.h
index 653477e4074d..f93aa5ee2e2e 100644
--- a/arch/mips/include/asm/mips-boards/launch.h
+++ b/arch/mips/include/asm/mips-boards/launch.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  *
  */
diff --git a/arch/mips/include/asm/mips-cm.h b/arch/mips/include/asm/mips-cm.h
index f6231b91b724..8bc5df49b0e1 100644
--- a/arch/mips/include/asm/mips-cm.h
+++ b/arch/mips/include/asm/mips-cm.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2013 Imagination Technologies
- * Author: Paul Burton <paul.burton@imgtec.com>
+ * Author: Paul Burton <paul.burton@mips.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
@@ -142,8 +142,8 @@ GCR_ACCESSOR_RO(64, 0x000, config)
 GCR_ACCESSOR_RW(64, 0x008, base)
 #define CM_GCR_BASE_GCRBASE			GENMASK_ULL(47, 15)
 #define CM_GCR_BASE_CMDEFTGT			GENMASK(1, 0)
-#define  CM_GCR_BASE_CMDEFTGT_DISABLED		0
-#define  CM_GCR_BASE_CMDEFTGT_MEM		1
+#define  CM_GCR_BASE_CMDEFTGT_MEM		0
+#define  CM_GCR_BASE_CMDEFTGT_RESERVED		1
 #define  CM_GCR_BASE_CMDEFTGT_IOCU0		2
 #define  CM_GCR_BASE_CMDEFTGT_IOCU1		3
 
diff --git a/arch/mips/include/asm/mips-cpc.h b/arch/mips/include/asm/mips-cpc.h
index f885051a8378..b55e335cfba4 100644
--- a/arch/mips/include/asm/mips-cpc.h
+++ b/arch/mips/include/asm/mips-cpc.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2013 Imagination Technologies
- * Author: Paul Burton <paul.burton@imgtec.com>
+ * Author: Paul Burton <paul.burton@mips.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
diff --git a/arch/mips/include/asm/mips-cps.h b/arch/mips/include/asm/mips-cps.h
index bf02b5070a98..8ad4a85eed0c 100644
--- a/arch/mips/include/asm/mips-cps.h
+++ b/arch/mips/include/asm/mips-cps.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2017 Imagination Technologies
- * Author: Paul Burton <paul.burton@imgtec.com>
+ * Author: Paul Burton <paul.burton@mips.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
diff --git a/arch/mips/include/asm/mips-gic.h b/arch/mips/include/asm/mips-gic.h
index a2badf572632..558059a8f218 100644
--- a/arch/mips/include/asm/mips-gic.h
+++ b/arch/mips/include/asm/mips-gic.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2017 Imagination Technologies
- * Author: Paul Burton <paul.burton@imgtec.com>
+ * Author: Paul Burton <paul.burton@mips.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
diff --git a/arch/mips/include/asm/mips_mt.h b/arch/mips/include/asm/mips_mt.h
index aa4cca060e0a..b444523ecd50 100644
--- a/arch/mips/include/asm/mips_mt.h
+++ b/arch/mips/include/asm/mips_mt.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Definitions and declarations for MIPS MT support that are common between
  * the VSMP, and AP/SP kernel models.
diff --git a/arch/mips/include/asm/mipsmtregs.h b/arch/mips/include/asm/mipsmtregs.h
index 5f8052ce43bf..212336b7c0f4 100644
--- a/arch/mips/include/asm/mipsmtregs.h
+++ b/arch/mips/include/asm/mipsmtregs.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * MT regs definitions, follows on from mipsregs.h
  * Copyright (C) 2004 - 2005 MIPS Technologies, Inc.  All rights reserved.
diff --git a/arch/mips/include/asm/mipsprom.h b/arch/mips/include/asm/mipsprom.h
index e93943fabeac..2eda19f8fd4c 100644
--- a/arch/mips/include/asm/mipsprom.h
+++ b/arch/mips/include/asm/mipsprom.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MIPSPROM_H
 #define __ASM_MIPSPROM_H
 
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index e4ed1bc9a734..6b1f1ad0542c 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -1355,19 +1355,17 @@ do {									\
 	if (sel == 0)							\
 		__asm__ __volatile__(					\
 			".set\tmips64\n\t"				\
-			"dmfc0\t%M0, " #source "\n\t"			\
-			"dsll\t%L0, %M0, 32\n\t"			\
-			"dsra\t%M0, %M0, 32\n\t"			\
-			"dsra\t%L0, %L0, 32\n\t"			\
+			"dmfc0\t%L0, " #source "\n\t"			\
+			"dsra\t%M0, %L0, 32\n\t"			\
+			"sll\t%L0, %L0, 0\n\t"				\
 			".set\tmips0"					\
 			: "=r" (__val));				\
 	else								\
 		__asm__ __volatile__(					\
 			".set\tmips64\n\t"				\
-			"dmfc0\t%M0, " #source ", " #sel "\n\t"		\
-			"dsll\t%L0, %M0, 32\n\t"			\
-			"dsra\t%M0, %M0, 32\n\t"			\
-			"dsra\t%L0, %L0, 32\n\t"			\
+			"dmfc0\t%L0, " #source ", " #sel "\n\t"		\
+			"dsra\t%M0, %L0, 32\n\t"			\
+			"sll\t%L0, %L0, 0\n\t"				\
 			".set\tmips0"					\
 			: "=r" (__val));				\
 	local_irq_restore(__flags);					\
@@ -1377,29 +1375,32 @@ do {									\
 
 #define __write_64bit_c0_split(source, sel, val)			\
 do {									\
+	unsigned long long __tmp;					\
 	unsigned long __flags;						\
 									\
 	local_irq_save(__flags);					\
 	if (sel == 0)							\
 		__asm__ __volatile__(					\
 			".set\tmips64\n\t"				\
-			"dsll\t%L0, %L0, 32\n\t"			\
+			"dsll\t%L0, %L1, 32\n\t"			\
 			"dsrl\t%L0, %L0, 32\n\t"			\
-			"dsll\t%M0, %M0, 32\n\t"			\
+			"dsll\t%M0, %M1, 32\n\t"			\
 			"or\t%L0, %L0, %M0\n\t"				\
 			"dmtc0\t%L0, " #source "\n\t"			\
 			".set\tmips0"					\
-			: : "r" (val));					\
+			: "=&r,r" (__tmp)				\
+			: "r,0" (val));					\
 	else								\
 		__asm__ __volatile__(					\
 			".set\tmips64\n\t"				\
-			"dsll\t%L0, %L0, 32\n\t"			\
+			"dsll\t%L0, %L1, 32\n\t"			\
 			"dsrl\t%L0, %L0, 32\n\t"			\
-			"dsll\t%M0, %M0, 32\n\t"			\
+			"dsll\t%M0, %M1, 32\n\t"			\
 			"or\t%L0, %L0, %M0\n\t"				\
 			"dmtc0\t%L0, " #source ", " #sel "\n\t"		\
 			".set\tmips0"					\
-			: : "r" (val));					\
+			: "=&r,r" (__tmp)				\
+			: "r,0" (val));					\
 	local_irq_restore(__flags);					\
 } while (0)
 
diff --git a/arch/mips/include/asm/mmu.h b/arch/mips/include/asm/mmu.h
index f6ba08d77931..0740be7d5d4a 100644
--- a/arch/mips/include/asm/mmu.h
+++ b/arch/mips/include/asm/mmu.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_MMU_H
 #define __ASM_MMU_H
 
diff --git a/arch/mips/include/asm/mmzone.h b/arch/mips/include/asm/mmzone.h
index f53ec54c92ff..f085fba41da5 100644
--- a/arch/mips/include/asm/mmzone.h
+++ b/arch/mips/include/asm/mmzone.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
  * Rewritten for Linux 2.6 by Christoph Hellwig (hch@lst.de) Jan 2004
diff --git a/arch/mips/include/asm/module.h b/arch/mips/include/asm/module.h
index 06552a965cf4..6dc0b21b8acd 100644
--- a/arch/mips/include/asm/module.h
+++ b/arch/mips/include/asm/module.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_MODULE_H
 #define _ASM_MODULE_H
 
diff --git a/arch/mips/include/asm/msa.h b/arch/mips/include/asm/msa.h
index 8967b475ab10..b1845102f8f9 100644
--- a/arch/mips/include/asm/msa.h
+++ b/arch/mips/include/asm/msa.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2013 Imagination Technologies
- * Author: Paul Burton <paul.burton@imgtec.com>
+ * Author: Paul Burton <paul.burton@mips.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
diff --git a/arch/mips/include/asm/nile4.h b/arch/mips/include/asm/nile4.h
index 99e97f8bfbca..9d36b7823603 100644
--- a/arch/mips/include/asm/nile4.h
+++ b/arch/mips/include/asm/nile4.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  *  asm-mips/nile4.h -- NEC Vrc-5074 Nile 4 definitions
  *
diff --git a/arch/mips/include/asm/octeon/cvmx-config.h b/arch/mips/include/asm/octeon/cvmx-config.h
index f4f1996e0fac..a8c358c02b05 100644
--- a/arch/mips/include/asm/octeon/cvmx-config.h
+++ b/arch/mips/include/asm/octeon/cvmx-config.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __CVMX_CONFIG_H__
 #define __CVMX_CONFIG_H__
 
diff --git a/arch/mips/include/asm/octeon/cvmx-fpa.h b/arch/mips/include/asm/octeon/cvmx-fpa.h
index c00501d0f7ae..29ae63606ab4 100644
--- a/arch/mips/include/asm/octeon/cvmx-fpa.h
+++ b/arch/mips/include/asm/octeon/cvmx-fpa.h
@@ -36,6 +36,8 @@
 #ifndef __CVMX_FPA_H__
 #define __CVMX_FPA_H__
 
+#include <linux/delay.h>
+
 #include <asm/octeon/cvmx-address.h>
 #include <asm/octeon/cvmx-fpa-defs.h>
 
@@ -165,7 +167,7 @@ static inline void cvmx_fpa_enable(void)
 		}
 
 		/* Enforce a 10 cycle delay between config and enable */
-		cvmx_wait(10);
+		__delay(10);
 	}
 
 	/* FIXME: CVMX_FPA_CTL_STATUS read is unmodelled */
diff --git a/arch/mips/include/asm/octeon/cvmx.h b/arch/mips/include/asm/octeon/cvmx.h
index 205ab2ce10f8..25854abc95f8 100644
--- a/arch/mips/include/asm/octeon/cvmx.h
+++ b/arch/mips/include/asm/octeon/cvmx.h
@@ -30,6 +30,7 @@
 
 #include <linux/kernel.h>
 #include <linux/string.h>
+#include <linux/delay.h>
 
 enum cvmx_mips_space {
 	CVMX_MIPS_SPACE_XKSEG = 3LL,
@@ -429,18 +430,6 @@ static inline uint64_t cvmx_get_cycle(void)
 }
 
 /**
- * Wait for the specified number of cycle
- *
- */
-static inline void cvmx_wait(uint64_t cycles)
-{
-	uint64_t done = cvmx_get_cycle() + cycles;
-
-	while (cvmx_get_cycle() < done)
-		; /* Spin */
-}
-
-/**
  * Reads a chip global cycle counter.  This counts CPU cycles since
  * chip reset.	The counter is 64 bit.
  * This register does not exist on CN38XX pass 1 silicion
@@ -481,7 +470,7 @@ static inline uint64_t cvmx_get_cycle_global(void)
 				result = -1;				\
 				break;					\
 			} else						\
-				cvmx_wait(100);				\
+				__delay(100);				\
 		}							\
 	} while (0);							\
 	result;								\
diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h
index 5f987598054f..ad461216b5a1 100644
--- a/arch/mips/include/asm/page.h
+++ b/arch/mips/include/asm/page.h
@@ -240,8 +240,8 @@ static inline int pfn_valid(unsigned long pfn)
 
 #endif
 
-#define virt_to_page(kaddr)	pfn_to_page(PFN_DOWN(virt_to_phys((void *)     \
-								  (kaddr))))
+#define virt_to_pfn(kaddr)   	PFN_DOWN(virt_to_phys((void *)(kaddr)))
+#define virt_to_page(kaddr)	pfn_to_page(virt_to_pfn(kaddr))
 
 extern int __virt_addr_valid(const volatile void *kaddr);
 #define virt_addr_valid(kaddr)						\
diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h
index 52f551ee492d..2339f42f047a 100644
--- a/arch/mips/include/asm/pci.h
+++ b/arch/mips/include/asm/pci.h
@@ -106,8 +106,6 @@ extern unsigned long PCIBIOS_MIN_MEM;
 
 #define PCIBIOS_MIN_CARDBUS_IO	0x4000
 
-extern void pcibios_set_master(struct pci_dev *dev);
-
 #define HAVE_PCI_MMAP
 #define ARCH_GENERIC_PCI_MMAP_RESOURCE
 #define HAVE_ARCH_PCI_RESOURCE_TO_USER
@@ -123,8 +121,6 @@ extern void pcibios_set_master(struct pci_dev *dev);
 #include <linux/string.h>
 #include <asm/io.h>
 
-struct pci_dev;
-
 /*
  * The PCI address space does equal the physical memory address space.
  * The networking and block device layers use this boolean for bounce
diff --git a/arch/mips/include/asm/pgtable-64.h b/arch/mips/include/asm/pgtable-64.h
index 67fe6dc5211c..0036ea0c7173 100644
--- a/arch/mips/include/asm/pgtable-64.h
+++ b/arch/mips/include/asm/pgtable-64.h
@@ -31,12 +31,7 @@
  * tables. Each page table is also a single 4K page, giving 512 (==
  * PTRS_PER_PTE) 8 byte ptes. Each pud entry is initialized to point to
  * invalid_pmd_table, each pmd entry is initialized to point to
- * invalid_pte_table, each pte is initialized to 0. When memory is low,
- * and a pmd table or a page table allocation fails, empty_bad_pmd_table
- * and empty_bad_page_table is returned back to higher layer code, so
- * that the failure is recognized later on. Linux does not seem to
- * handle these failures very well though. The empty_bad_page_table has
- * invalid pte entries in it, to force page faults.
+ * invalid_pte_table, each pte is initialized to 0.
  *
  * Kernel mappings: kernel mappings are held in the swapper_pg_table.
  * The layout is identical to userspace except it's indexed with the
@@ -175,7 +170,6 @@
 	printk("%s:%d: bad pgd %016lx.\n", __FILE__, __LINE__, pgd_val(e))
 
 extern pte_t invalid_pte_table[PTRS_PER_PTE];
-extern pte_t empty_bad_page_table[PTRS_PER_PTE];
 
 #ifndef __PAGETABLE_PUD_FOLDED
 /*
diff --git a/arch/mips/include/asm/pm-cps.h b/arch/mips/include/asm/pm-cps.h
index 89d58d80b77b..bb0616967342 100644
--- a/arch/mips/include/asm/pm-cps.h
+++ b/arch/mips/include/asm/pm-cps.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2014 Imagination Technologies
- * Author: Paul Burton <paul.burton@imgtec.com>
+ * Author: Paul Burton <paul.burton@mips.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h
index 95b8c471f572..af34afbc32d9 100644
--- a/arch/mips/include/asm/processor.h
+++ b/arch/mips/include/asm/processor.h
@@ -368,8 +368,6 @@ struct task_struct;
 /* Free all resources held by a thread. */
 #define release_thread(thread) do { } while(0)
 
-extern unsigned long thread_saved_pc(struct task_struct *tsk);
-
 /*
  * Do necessary setup to start up a newly executed thread.
  */
diff --git a/arch/mips/include/asm/seccomp.h b/arch/mips/include/asm/seccomp.h
index d886d6f7687a..e383d7e27b93 100644
--- a/arch/mips/include/asm/seccomp.h
+++ b/arch/mips/include/asm/seccomp.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_SECCOMP_H
 
 #include <linux/unistd.h>
diff --git a/arch/mips/include/asm/setup.h b/arch/mips/include/asm/setup.h
index 4f5279a8308d..d49d247d48a1 100644
--- a/arch/mips/include/asm/setup.h
+++ b/arch/mips/include/asm/setup.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _MIPS_SETUP_H
 #define _MIPS_SETUP_H
 
diff --git a/arch/mips/include/asm/sgi/pi1.h b/arch/mips/include/asm/sgi/pi1.h
index 96b1a0771ec3..88b814ef3f18 100644
--- a/arch/mips/include/asm/sgi/pi1.h
+++ b/arch/mips/include/asm/sgi/pi1.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * pi1.h: Definitions for SGI PI1 parallel port
  */
diff --git a/arch/mips/include/asm/smp-cps.h b/arch/mips/include/asm/smp-cps.h
index 2ae1f61a4a95..16b4ee3feb98 100644
--- a/arch/mips/include/asm/smp-cps.h
+++ b/arch/mips/include/asm/smp-cps.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2013 Imagination Technologies
- * Author: Paul Burton <paul.burton@imgtec.com>
+ * Author: Paul Burton <paul.burton@mips.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
diff --git a/arch/mips/include/asm/smp.h b/arch/mips/include/asm/smp.h
index 9e494f8d9c03..88ebd83b3bf9 100644
--- a/arch/mips/include/asm/smp.h
+++ b/arch/mips/include/asm/smp.h
@@ -29,7 +29,7 @@ extern cpumask_t cpu_foreign_map[];
 
 /* Map from cpu id to sequential logical cpu number.  This will only
    not be idempotent when cpus failed to come on-line.	*/
-extern int __cpu_number_map[NR_CPUS];
+extern int __cpu_number_map[CONFIG_MIPS_NR_CPU_NR_MAP];
 #define cpu_number_map(cpu)  __cpu_number_map[cpu]
 
 /* The reverse map from sequential logical cpu number to cpu id.  */
diff --git a/arch/mips/include/asm/sn/hub.h b/arch/mips/include/asm/sn/hub.h
index 1992d9254a08..338f7eed74f1 100644
--- a/arch/mips/include/asm/sn/hub.h
+++ b/arch/mips/include/asm/sn/hub.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_SN_HUB_H
 #define __ASM_SN_HUB_H
 
diff --git a/arch/mips/include/asm/sn/ioc3.h b/arch/mips/include/asm/sn/ioc3.h
index feb385180f87..25c8dccab51f 100644
--- a/arch/mips/include/asm/sn/ioc3.h
+++ b/arch/mips/include/asm/sn/ioc3.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright (C) 1999, 2000 Ralf Baechle
  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
diff --git a/arch/mips/include/asm/sn/klkernvars.h b/arch/mips/include/asm/sn/klkernvars.h
index 6af25ba41ade..ea6b21795163 100644
--- a/arch/mips/include/asm/sn/klkernvars.h
+++ b/arch/mips/include/asm/sn/klkernvars.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * File ported from IRIX to Linux by Kanoj Sarcar, 06/08/00.
  * Copyright 2000 Silicon Graphics, Inc.
diff --git a/arch/mips/include/asm/sn/mapped_kernel.h b/arch/mips/include/asm/sn/mapped_kernel.h
index 401f3b0eee17..2f3efa91c16e 100644
--- a/arch/mips/include/asm/sn/mapped_kernel.h
+++ b/arch/mips/include/asm/sn/mapped_kernel.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * File created by Kanoj Sarcar 06/06/00.
  * Copyright 2000 Silicon Graphics, Inc.
diff --git a/arch/mips/include/asm/sn/sn_private.h b/arch/mips/include/asm/sn/sn_private.h
index fdfae43d8b99..f09ba846c644 100644
--- a/arch/mips/include/asm/sn/sn_private.h
+++ b/arch/mips/include/asm/sn/sn_private.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_SN_SN_PRIVATE_H
 #define __ASM_SN_SN_PRIVATE_H
 
diff --git a/arch/mips/include/asm/sparsemem.h b/arch/mips/include/asm/sparsemem.h
index b1071c1e54f5..b0686ca3d8bf 100644
--- a/arch/mips/include/asm/sparsemem.h
+++ b/arch/mips/include/asm/sparsemem.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _MIPS_SPARSEMEM_H
 #define _MIPS_SPARSEMEM_H
 #ifdef CONFIG_SPARSEMEM
diff --git a/arch/mips/include/asm/spinlock.h b/arch/mips/include/asm/spinlock.h
index a7d21da16b6a..ee81297d9117 100644
--- a/arch/mips/include/asm/spinlock.h
+++ b/arch/mips/include/asm/spinlock.h
@@ -13,11 +13,4 @@
 #include <asm/qrwlock.h>
 #include <asm/qspinlock.h>
 
-#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
-#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
-
-#define arch_spin_relax(lock)	cpu_relax()
-#define arch_read_relax(lock)	cpu_relax()
-#define arch_write_relax(lock)	cpu_relax()
-
 #endif /* _ASM_SPINLOCK_H */
diff --git a/arch/mips/include/asm/spinlock_types.h b/arch/mips/include/asm/spinlock_types.h
index 177e722eb96c..28fd4b140bea 100644
--- a/arch/mips/include/asm/spinlock_types.h
+++ b/arch/mips/include/asm/spinlock_types.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_SPINLOCK_TYPES_H
 #define _ASM_SPINLOCK_TYPES_H
 
diff --git a/arch/mips/include/asm/spram.h b/arch/mips/include/asm/spram.h
index 0f90d88e464d..63cb90fd4148 100644
--- a/arch/mips/include/asm/spram.h
+++ b/arch/mips/include/asm/spram.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _MIPS_SPRAM_H
 #define _MIPS_SPRAM_H
 
diff --git a/arch/mips/include/asm/stackframe.h b/arch/mips/include/asm/stackframe.h
index 5d3563c55e0c..2161357cc68f 100644
--- a/arch/mips/include/asm/stackframe.h
+++ b/arch/mips/include/asm/stackframe.h
@@ -199,6 +199,10 @@
 		sll	k0, 3		/* extract cu0 bit */
 		.set	noreorder
 		bltz	k0, 8f
+		 move	k0, sp
+		.if \docfi
+		.cfi_register sp, k0
+		.endif
 #ifdef CONFIG_EVA
 		/*
 		 * Flush interAptiv's Return Prediction Stack (RPS) by writing
@@ -225,10 +229,6 @@
 		MTC0	k0, CP0_ENTRYHI
 #endif
 		.set	reorder
-		 move	k0, sp
-		.if \docfi
-		.cfi_register sp, k0
-		.endif
 		/* Called from user mode, new stack. */
 		get_saved_sp docfi=\docfi tosp=1
 8:
diff --git a/arch/mips/include/asm/stackprotector.h b/arch/mips/include/asm/stackprotector.h
index eb9b1035e926..68d4be9e1254 100644
--- a/arch/mips/include/asm/stackprotector.h
+++ b/arch/mips/include/asm/stackprotector.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * GCC stack protector support.
  *
diff --git a/arch/mips/include/asm/stacktrace.h b/arch/mips/include/asm/stacktrace.h
index 10c4e9c84448..8ad25c25b4f8 100644
--- a/arch/mips/include/asm/stacktrace.h
+++ b/arch/mips/include/asm/stacktrace.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_STACKTRACE_H
 #define _ASM_STACKTRACE_H
 
diff --git a/arch/mips/include/asm/syscall.h b/arch/mips/include/asm/syscall.h
index 7c713025b23f..0170602a1e4e 100644
--- a/arch/mips/include/asm/syscall.h
+++ b/arch/mips/include/asm/syscall.h
@@ -26,12 +26,34 @@
 #define __NR_syscall 4000
 #endif
 
+static inline bool mips_syscall_is_indirect(struct task_struct *task,
+					    struct pt_regs *regs)
+{
+	/* O32 ABI syscall() - Either 64-bit with O32 or 32-bit */
+	return (IS_ENABLED(CONFIG_32BIT) ||
+		test_tsk_thread_flag(task, TIF_32BIT_REGS)) &&
+		(regs->regs[2] == __NR_syscall);
+}
+
 static inline long syscall_get_nr(struct task_struct *task,
 				  struct pt_regs *regs)
 {
 	return current_thread_info()->syscall;
 }
 
+static inline void mips_syscall_update_nr(struct task_struct *task,
+					  struct pt_regs *regs)
+{
+	/*
+	 * v0 is the system call number, except for O32 ABI syscall(), where it
+	 * ends up in a0.
+	 */
+	if (mips_syscall_is_indirect(task, regs))
+		task_thread_info(task)->syscall = regs->regs[4];
+	else
+		task_thread_info(task)->syscall = regs->regs[2];
+}
+
 static inline unsigned long mips_get_syscall_arg(unsigned long *arg,
 	struct task_struct *task, struct pt_regs *regs, unsigned int n)
 {
@@ -98,10 +120,9 @@ static inline void syscall_get_arguments(struct task_struct *task,
 					 unsigned long *args)
 {
 	int ret;
-	/* O32 ABI syscall() - Either 64-bit with O32 or 32-bit */
-	if ((IS_ENABLED(CONFIG_32BIT) ||
-	    test_tsk_thread_flag(task, TIF_32BIT_REGS)) &&
-	    (regs->regs[2] == __NR_syscall))
+
+	/* O32 ABI syscall() */
+	if (mips_syscall_is_indirect(task, regs))
 		i++;
 
 	while (n--)
diff --git a/arch/mips/include/asm/thread_info.h b/arch/mips/include/asm/thread_info.h
index b439e512792b..5e8927f99a76 100644
--- a/arch/mips/include/asm/thread_info.h
+++ b/arch/mips/include/asm/thread_info.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* thread_info.h: MIPS low-level thread information
  *
  * Copyright (C) 2002  David Howells (dhowells@redhat.com)
diff --git a/arch/mips/include/asm/tlb.h b/arch/mips/include/asm/tlb.h
index 939734de4359..b6823b9e94da 100644
--- a/arch/mips/include/asm/tlb.h
+++ b/arch/mips/include/asm/tlb.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_TLB_H
 #define __ASM_TLB_H
 
diff --git a/arch/mips/include/asm/tlbex.h b/arch/mips/include/asm/tlbex.h
index 53050e9dd2c9..4ed7ebed3bf1 100644
--- a/arch/mips/include/asm/tlbex.h
+++ b/arch/mips/include/asm/tlbex.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_TLBEX_H
 #define __ASM_TLBEX_H
 
diff --git a/arch/mips/include/asm/tlbflush.h b/arch/mips/include/asm/tlbflush.h
index 86b21de12e91..40a361092491 100644
--- a/arch/mips/include/asm/tlbflush.h
+++ b/arch/mips/include/asm/tlbflush.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_TLBFLUSH_H
 #define __ASM_TLBFLUSH_H
 
diff --git a/arch/mips/include/asm/tlbmisc.h b/arch/mips/include/asm/tlbmisc.h
index 3a452282cba0..c1a540669c23 100644
--- a/arch/mips/include/asm/tlbmisc.h
+++ b/arch/mips/include/asm/tlbmisc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef __ASM_TLBMISC_H
 #define __ASM_TLBMISC_H
 
diff --git a/arch/mips/include/asm/txx9/boards.h b/arch/mips/include/asm/txx9/boards.h
index cbe9476d963e..d45237befd3e 100644
--- a/arch/mips/include/asm/txx9/boards.h
+++ b/arch/mips/include/asm/txx9/boards.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifdef CONFIG_TOSHIBA_JMR3927
 BOARD_VEC(jmr3927_vec)
 #endif
diff --git a/arch/mips/include/asm/vdso.h b/arch/mips/include/asm/vdso.h
index b7cd6cf77b83..91bf0c2c265c 100644
--- a/arch/mips/include/asm/vdso.h
+++ b/arch/mips/include/asm/vdso.h
@@ -99,7 +99,7 @@ static inline u32 vdso_data_read_begin(const union mips_vdso_data *data)
 	u32 seq;
 
 	while (true) {
-		seq = ACCESS_ONCE(data->seq_count);
+		seq = READ_ONCE(data->seq_count);
 		if (likely(!(seq & 1))) {
 			/* Paired with smp_wmb() in vdso_data_write_*(). */
 			smp_rmb();
diff --git a/arch/mips/include/asm/vga.h b/arch/mips/include/asm/vga.h
index 975ff51f80c4..0136e0366698 100644
--- a/arch/mips/include/asm/vga.h
+++ b/arch/mips/include/asm/vga.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  *	Access to VGA videoram
  *
diff --git a/arch/mips/include/asm/yamon-dt.h b/arch/mips/include/asm/yamon-dt.h
index 485cfe3e45e1..10a073e6877a 100644
--- a/arch/mips/include/asm/yamon-dt.h
+++ b/arch/mips/include/asm/yamon-dt.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2016 Imagination Technologies
- * Author: Paul Burton <paul.burton@imgtec.com>
+ * Author: Paul Burton <paul.burton@mips.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the