Merge tag 'nds32-for-linus-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux

Pull nds32 updates from Greentime Hu:

 - Clean up codes and Makefile

 - Fix a vDSO bug

 - Remove useless functions/header files

 - Update git repo path in MAINTAINERS

* tag 'nds32-for-linus-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux:
  nds32: Fix vDSO clock_getres()
  MAINTAINERS: update nds32 git repo path
  nds32: don't export low-level cache flushing routines
  arch: nds32: Kconfig: pedantic formatting
  nds32: fix semicolon code style issue
  nds32: vdso: drop unnecessary cc-ldoption
  nds32: remove unused generic-y += cmpxchg-local.h
  nds32: Use the correct style for SPDX License Identifier
  nds32: remove __virt_to_bus and __bus_to_virt
  nds32: vdso: fix and clean-up Makefile
  nds32: add vmlinux.lds and vdso.so to .gitignore
  nds32: ex-exit: Remove unneeded need_resched() loop
  nds32/io: Remove useless definition of mmiowb()
  nds32: Removed unused thread flag TIF_USEDFPU

59 files changed, 72 insertions, 87 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index 005902ea1450..9cc6767e1b12 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1000,7 +1000,7 @@ F:	include/linux/clk/analogbits*
 ANDES ARCHITECTURE
 M:	Greentime Hu <green.hu@gmail.com>
 M:	Vincent Chen <deanbo422@gmail.com>
-T:	git https://github.com/andestech/linux.git
+T:	git https://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux.git
 S:	Supported
 F:	arch/nds32/
 F:	Documentation/devicetree/bindings/interrupt-controller/andestech,ativic32.txt
diff --git a/arch/nds32/Kconfig b/arch/nds32/Kconfig
index 55559ca0efe4..2245169c72af 100644
--- a/arch/nds32/Kconfig
+++ b/arch/nds32/Kconfig
@@ -4,7 +4,7 @@
 #
 
 config NDS32
-        def_bool y
+	def_bool y
 	select ARCH_32BIT_OFF_T
 	select ARCH_HAS_SYNC_DMA_FOR_CPU
 	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
@@ -51,20 +51,20 @@ config GENERIC_CALIBRATE_DELAY
 	def_bool y
 
 config GENERIC_CSUM
-        def_bool y
+	def_bool y
 
 config GENERIC_HWEIGHT
-        def_bool y
+	def_bool y
 
 config GENERIC_LOCKBREAK
-        def_bool y
+	def_bool y
 	depends on PREEMPT
 
 config TRACE_IRQFLAGS_SUPPORT
 	def_bool y
 
 config STACKTRACE_SUPPORT
-        def_bool y
+	def_bool y
 
 config FIX_EARLYCON_MEM
 	def_bool y
@@ -79,11 +79,11 @@ config NR_CPUS
 	default 1
 
 config MMU
-        def_bool y
+	def_bool y
 
 config NDS32_BUILTIN_DTB
-        string "Builtin DTB"
-        default ""
+	string "Builtin DTB"
+	default ""
 	help
 	  User can use it to specify the dts of the SoC
 endmenu
diff --git a/arch/nds32/include/asm/Kbuild b/arch/nds32/include/asm/Kbuild
index d8ce778d0640..f43b44d692ca 100644
--- a/arch/nds32/include/asm/Kbuild
+++ b/arch/nds32/include/asm/Kbuild
@@ -6,7 +6,6 @@ generic-y += bugs.h
 generic-y += checksum.h
 generic-y += clkdev.h
 generic-y += cmpxchg.h
-generic-y += cmpxchg-local.h
 generic-y += compat.h
 generic-y += cputime.h
 generic-y += device.h
diff --git a/arch/nds32/include/asm/assembler.h b/arch/nds32/include/asm/assembler.h
index c3855782a541..5e7c56926049 100644
--- a/arch/nds32/include/asm/assembler.h
+++ b/arch/nds32/include/asm/assembler.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __NDS32_ASSEMBLER_H__
diff --git a/arch/nds32/include/asm/barrier.h b/arch/nds32/include/asm/barrier.h
index faafc373ea6c..16413172fd50 100644
--- a/arch/nds32/include/asm/barrier.h
+++ b/arch/nds32/include/asm/barrier.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __NDS32_ASM_BARRIER_H
diff --git a/arch/nds32/include/asm/bitfield.h b/arch/nds32/include/asm/bitfield.h
index 7414fcbbab4e..e75212c76b20 100644
--- a/arch/nds32/include/asm/bitfield.h
+++ b/arch/nds32/include/asm/bitfield.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __NDS32_BITFIELD_H__
diff --git a/arch/nds32/include/asm/cache.h b/arch/nds32/include/asm/cache.h
index 347db4881c5f..fc3c41b59169 100644
--- a/arch/nds32/include/asm/cache.h
+++ b/arch/nds32/include/asm/cache.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __NDS32_CACHE_H__
diff --git a/arch/nds32/include/asm/cache_info.h b/arch/nds32/include/asm/cache_info.h
index 38ec458ba543..e89d8078f3a6 100644
--- a/arch/nds32/include/asm/cache_info.h
+++ b/arch/nds32/include/asm/cache_info.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 struct cache_info {
diff --git a/arch/nds32/include/asm/cacheflush.h b/arch/nds32/include/asm/cacheflush.h
index 8b26198d51bb..d9ac7e6408ef 100644
--- a/arch/nds32/include/asm/cacheflush.h
+++ b/arch/nds32/include/asm/cacheflush.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __NDS32_CACHEFLUSH_H__
diff --git a/arch/nds32/include/asm/current.h b/arch/nds32/include/asm/current.h
index b4dcd22b7bcb..65d30096142b 100644
--- a/arch/nds32/include/asm/current.h
+++ b/arch/nds32/include/asm/current.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef _ASM_NDS32_CURRENT_H
diff --git a/arch/nds32/include/asm/delay.h b/arch/nds32/include/asm/delay.h
index 519ba97acb6e..56ea3894f8f8 100644
--- a/arch/nds32/include/asm/delay.h
+++ b/arch/nds32/include/asm/delay.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __NDS32_DELAY_H__
diff --git a/arch/nds32/include/asm/elf.h b/arch/nds32/include/asm/elf.h
index 02250626b9f0..1c8e56d7013d 100644
--- a/arch/nds32/include/asm/elf.h
+++ b/arch/nds32/include/asm/elf.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __ASMNDS32_ELF_H
diff --git a/arch/nds32/include/asm/fixmap.h b/arch/nds32/include/asm/fixmap.h
index 0e60e153a71a..5a4bf11e5800 100644
--- a/arch/nds32/include/asm/fixmap.h
+++ b/arch/nds32/include/asm/fixmap.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __ASM_NDS32_FIXMAP_H
diff --git a/arch/nds32/include/asm/futex.h b/arch/nds32/include/asm/futex.h
index baf178bf1d0b..5213c65c2e0b 100644
--- a/arch/nds32/include/asm/futex.h
+++ b/arch/nds32/include/asm/futex.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __NDS32_FUTEX_H__
diff --git a/arch/nds32/include/asm/highmem.h b/arch/nds32/include/asm/highmem.h
index 425d546cb059..b3a82c97ded3 100644
--- a/arch/nds32/include/asm/highmem.h
+++ b/arch/nds32/include/asm/highmem.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef _ASM_HIGHMEM_H
diff --git a/arch/nds32/include/asm/io.h b/arch/nds32/include/asm/io.h
index 5ef8ae5ba833..16f262322b8f 100644
--- a/arch/nds32/include/asm/io.h
+++ b/arch/nds32/include/asm/io.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __ASM_NDS32_IO_H
diff --git a/arch/nds32/include/asm/irqflags.h b/arch/nds32/include/asm/irqflags.h
index 2bfd00f8bc48..fb45ec46bb1b 100644
--- a/arch/nds32/include/asm/irqflags.h
+++ b/arch/nds32/include/asm/irqflags.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #include <asm/nds32.h>
diff --git a/arch/nds32/include/asm/l2_cache.h b/arch/nds32/include/asm/l2_cache.h
index 37dd5ef61de8..3ea48e19e6de 100644
--- a/arch/nds32/include/asm/l2_cache.h
+++ b/arch/nds32/include/asm/l2_cache.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef L2_CACHE_H
diff --git a/arch/nds32/include/asm/linkage.h b/arch/nds32/include/asm/linkage.h
index e708c8bdb926..a696469abb70 100644
--- a/arch/nds32/include/asm/linkage.h
+++ b/arch/nds32/include/asm/linkage.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __ASM_LINKAGE_H
diff --git a/arch/nds32/include/asm/memory.h b/arch/nds32/include/asm/memory.h
index 60efc726b56e..940d32842793 100644
--- a/arch/nds32/include/asm/memory.h
+++ b/arch/nds32/include/asm/memory.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __ASM_NDS32_MEMORY_H
@@ -15,14 +15,6 @@
 #define PHYS_OFFSET     (0x0)
 #endif
 
-#ifndef __virt_to_bus
-#define __virt_to_bus	__virt_to_phys
-#endif
-
-#ifndef __bus_to_virt
-#define __bus_to_virt	__phys_to_virt
-#endif
-
 /*
  * TASK_SIZE - the maximum size of a user space task.
  * TASK_UNMAPPED_BASE - the lower boundary of the mmap VM area
diff --git a/arch/nds32/include/asm/mmu.h b/arch/nds32/include/asm/mmu.h
index 88b9ee8c1064..89d63afee455 100644
--- a/arch/nds32/include/asm/mmu.h
+++ b/arch/nds32/include/asm/mmu.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __NDS32_MMU_H
diff --git a/arch/nds32/include/asm/mmu_context.h b/arch/nds32/include/asm/mmu_context.h
index fd7d13cefccc..b8fd3d189fdc 100644
--- a/arch/nds32/include/asm/mmu_context.h
+++ b/arch/nds32/include/asm/mmu_context.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __ASM_NDS32_MMU_CONTEXT_H
diff --git a/arch/nds32/include/asm/module.h b/arch/nds32/include/asm/module.h
index 16cf9c7237ad..a3a08e993c65 100644
--- a/arch/nds32/include/asm/module.h
+++ b/arch/nds32/include/asm/module.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef _ASM_NDS32_MODULE_H
diff --git a/arch/nds32/include/asm/nds32.h b/arch/nds32/include/asm/nds32.h
index 68c38151c3e4..4994f6a9e0a0 100644
--- a/arch/nds32/include/asm/nds32.h
+++ b/arch/nds32/include/asm/nds32.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef _ASM_NDS32_NDS32_H_
diff --git a/arch/nds32/include/asm/page.h b/arch/nds32/include/asm/page.h
index 947f0491c9a7..8feb1fa12f01 100644
--- a/arch/nds32/include/asm/page.h
+++ b/arch/nds32/include/asm/page.h
@@ -1,5 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
- * SPDX-License-Identifier: GPL-2.0
  * Copyright (C) 2005-2017 Andes Technology Corporation
  */
 
diff --git a/arch/nds32/include/asm/pgalloc.h b/arch/nds32/include/asm/pgalloc.h
index 3c5fee5b5759..3cbc749c79aa 100644
--- a/arch/nds32/include/asm/pgalloc.h
+++ b/arch/nds32/include/asm/pgalloc.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef _ASMNDS32_PGALLOC_H
diff --git a/arch/nds32/include/asm/pgtable.h b/arch/nds32/include/asm/pgtable.h
index ee59c1f9e4fc..c70cc56bec09 100644
--- a/arch/nds32/include/asm/pgtable.h
+++ b/arch/nds32/include/asm/pgtable.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef _ASMNDS32_PGTABLE_H
diff --git a/arch/nds32/include/asm/proc-fns.h b/arch/nds32/include/asm/proc-fns.h
index bedc4f59e064..27c617fa77af 100644
--- a/arch/nds32/include/asm/proc-fns.h
+++ b/arch/nds32/include/asm/proc-fns.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __NDS32_PROCFNS_H__
diff --git a/arch/nds32/include/asm/processor.h b/arch/nds32/include/asm/processor.h
index 72024f8bc129..b82369c7659d 100644
--- a/arch/nds32/include/asm/processor.h
+++ b/arch/nds32/include/asm/processor.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __ASM_NDS32_PROCESSOR_H
diff --git a/arch/nds32/include/asm/ptrace.h b/arch/nds32/include/asm/ptrace.h
index c4538839055c..919ee223620c 100644
--- a/arch/nds32/include/asm/ptrace.h
+++ b/arch/nds32/include/asm/ptrace.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __ASM_NDS32_PTRACE_H
diff --git a/arch/nds32/include/asm/shmparam.h b/arch/nds32/include/asm/shmparam.h
index fd1cff64b68e..3aeee946973d 100644
--- a/arch/nds32/include/asm/shmparam.h
+++ b/arch/nds32/include/asm/shmparam.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef _ASMNDS32_SHMPARAM_H
diff --git a/arch/nds32/include/asm/string.h b/arch/nds32/include/asm/string.h
index 179272caa540..cae8fe16de98 100644
--- a/arch/nds32/include/asm/string.h
+++ b/arch/nds32/include/asm/string.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __ASM_NDS32_STRING_H
diff --git a/arch/nds32/include/asm/swab.h b/arch/nds32/include/asm/swab.h
index e01a755a37d2..362a466f2976 100644
--- a/arch/nds32/include/asm/swab.h
+++ b/arch/nds32/include/asm/swab.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __NDS32_SWAB_H__
diff --git a/arch/nds32/include/asm/syscall.h b/arch/nds32/include/asm/syscall.h
index 174b8571d362..899b2fb4b52f 100644
--- a/arch/nds32/include/asm/syscall.h
+++ b/arch/nds32/include/asm/syscall.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2008-2009 Red Hat, Inc.  All rights reserved.
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
diff --git a/arch/nds32/include/asm/syscalls.h b/arch/nds32/include/asm/syscalls.h
index da32101b455d..f3b16f602cb5 100644
--- a/arch/nds32/include/asm/syscalls.h
+++ b/arch/nds32/include/asm/syscalls.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __ASM_NDS32_SYSCALLS_H
diff --git a/arch/nds32/include/asm/thread_info.h b/arch/nds32/include/asm/thread_info.h
index bff741ff337b..c135111ec44e 100644
--- a/arch/nds32/include/asm/thread_info.h
+++ b/arch/nds32/include/asm/thread_info.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __ASM_NDS32_THREAD_INFO_H
@@ -42,7 +42,6 @@ struct thread_info {
  *  TIF_SIGPENDING	- signal pending
  *  TIF_NEED_RESCHED	- rescheduling necessary
  *  TIF_NOTIFY_RESUME	- callback before returning to user
- *  TIF_USEDFPU		- FPU was used by this task this quantum (SMP)
  *  TIF_POLLING_NRFLAG	- true if poll_idle() is polling TIF_NEED_RESCHED
  */
 #define TIF_SIGPENDING		1
@@ -50,7 +49,6 @@ struct thread_info {
 #define TIF_SINGLESTEP		3
 #define TIF_NOTIFY_RESUME	4	/* callback before returning to user */
 #define TIF_SYSCALL_TRACE	8
-#define TIF_USEDFPU             16
 #define TIF_POLLING_NRFLAG	17
 #define TIF_MEMDIE		18
 #define TIF_FREEZE		19
diff --git a/arch/nds32/include/asm/tlb.h b/arch/nds32/include/asm/tlb.h
index d5ae571c8d30..a8aff1c8b4f4 100644
--- a/arch/nds32/include/asm/tlb.h
+++ b/arch/nds32/include/asm/tlb.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __ASMNDS32_TLB_H
diff --git a/arch/nds32/include/asm/tlbflush.h b/arch/nds32/include/asm/tlbflush.h
index 38ee769b18d8..97155366ea01 100644
--- a/arch/nds32/include/asm/tlbflush.h
+++ b/arch/nds32/include/asm/tlbflush.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef _ASMNDS32_TLBFLUSH_H
diff --git a/arch/nds32/include/asm/uaccess.h b/arch/nds32/include/asm/uaccess.h
index 116598b47c4d..8916ad9f9f13 100644
--- a/arch/nds32/include/asm/uaccess.h
+++ b/arch/nds32/include/asm/uaccess.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef _ASMANDES_UACCESS_H
diff --git a/arch/nds32/include/asm/unistd.h b/arch/nds32/include/asm/unistd.h
index b586a2862beb..bf5e2d440913 100644
--- a/arch/nds32/include/asm/unistd.h
+++ b/arch/nds32/include/asm/unistd.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #define __ARCH_WANT_SYS_CLONE
diff --git a/arch/nds32/include/asm/vdso.h b/arch/nds32/include/asm/vdso.h
index af2c6afc2469..89b113ffc3dc 100644
--- a/arch/nds32/include/asm/vdso.h
+++ b/arch/nds32/include/asm/vdso.h
@@ -1,5 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
- * SPDX-License-Identifier: GPL-2.0
  * Copyright (C) 2005-2017 Andes Technology Corporation
  */
 
diff --git a/arch/nds32/include/asm/vdso_datapage.h b/arch/nds32/include/asm/vdso_datapage.h
index 79db5a12ca5e..74c68802021e 100644
--- a/arch/nds32/include/asm/vdso_datapage.h
+++ b/arch/nds32/include/asm/vdso_datapage.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2012 ARM Limited
 // Copyright (C) 2005-2017 Andes Technology Corporation
 #ifndef __ASM_VDSO_DATAPAGE_H
@@ -20,6 +20,7 @@ struct vdso_data {
 	u32 xtime_clock_sec;	/* CLOCK_REALTIME - seconds */
 	u32 cs_mult;		/* clocksource multiplier */
 	u32 cs_shift;		/* Cycle to nanosecond divisor (power of two) */
+	u32 hrtimer_res;	/* hrtimer resolution */
 
 	u64 cs_cycle_last;	/* last cycle value */
 	u64 cs_mask;		/* clocksource mask */
diff --git a/arch/nds32/include/asm/vdso_timer_info.h b/arch/nds32/include/asm/vdso_timer_info.h
index 50ba117cff12..328439ce37db 100644
--- a/arch/nds32/include/asm/vdso_timer_info.h
+++ b/arch/nds32/include/asm/vdso_timer_info.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 extern struct timer_info_t timer_info;
diff --git a/arch/nds32/include/uapi/asm/auxvec.h b/arch/nds32/include/uapi/asm/auxvec.h
index 2d3213f5e595..b5d58ea8decb 100644
--- a/arch/nds32/include/uapi/asm/auxvec.h
+++ b/arch/nds32/include/uapi/asm/auxvec.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __ASM_AUXVEC_H
diff --git a/arch/nds32/include/uapi/asm/byteorder.h b/arch/nds32/include/uapi/asm/byteorder.h
index a23f6f3a2468..511e653c709d 100644
--- a/arch/nds32/include/uapi/asm/byteorder.h
+++ b/arch/nds32/include/uapi/asm/byteorder.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __NDS32_BYTEORDER_H__
diff --git a/arch/nds32/include/uapi/asm/cachectl.h b/arch/nds32/include/uapi/asm/cachectl.h
index 4cdca9b23974..73793662815c 100644
--- a/arch/nds32/include/uapi/asm/cachectl.h
+++ b/arch/nds32/include/uapi/asm/cachectl.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 1994, 1995, 1996 by Ralf Baechle
 // Copyright (C) 2005-2017 Andes Technology Corporation
 #ifndef	_ASM_CACHECTL
diff --git a/arch/nds32/include/uapi/asm/param.h b/arch/nds32/include/uapi/asm/param.h
index e3fb723ee362..2977534a6bd3 100644
--- a/arch/nds32/include/uapi/asm/param.h
+++ b/arch/nds32/include/uapi/asm/param.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __ASM_NDS32_PARAM_H
diff --git a/arch/nds32/include/uapi/asm/ptrace.h b/arch/nds32/include/uapi/asm/ptrace.h
index 358c99e399d0..1a6e01c00e6f 100644
--- a/arch/nds32/include/uapi/asm/ptrace.h
+++ b/arch/nds32/include/uapi/asm/ptrace.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef __UAPI_ASM_NDS32_PTRACE_H
diff --git a/arch/nds32/include/uapi/asm/sigcontext.h b/arch/nds32/include/uapi/asm/sigcontext.h
index 58afc416473e..628ff6b75825 100644
--- a/arch/nds32/include/uapi/asm/sigcontext.h
+++ b/arch/nds32/include/uapi/asm/sigcontext.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #ifndef _ASMNDS32_SIGCONTEXT_H
diff --git a/arch/nds32/include/uapi/asm/unistd.h b/arch/nds32/include/uapi/asm/unistd.h
index 4ec8f543103f..c691735017ed 100644
--- a/arch/nds32/include/uapi/asm/unistd.h
+++ b/arch/nds32/include/uapi/asm/unistd.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #define __ARCH_WANT_STAT64
diff --git a/arch/nds32/kernel/.gitignore b/arch/nds32/kernel/.gitignore
new file mode 100644
index 000000000000..c5f676c3c224
--- /dev/null
+++ b/arch/nds32/kernel/.gitignore
@@ -0,0 +1 @@
+vmlinux.lds
diff --git a/arch/nds32/kernel/cacheinfo.c b/arch/nds32/kernel/cacheinfo.c
index 0a7bc696dd55..aab98e447feb 100644
--- a/arch/nds32/kernel/cacheinfo.c
+++ b/arch/nds32/kernel/cacheinfo.c
@@ -13,7 +13,7 @@ static void ci_leaf_init(struct cacheinfo *this_leaf,
 	this_leaf->level = level;
 	this_leaf->type = type;
 	this_leaf->coherency_line_size = CACHE_LINE_SIZE(cache_type);
-	this_leaf->number_of_sets = CACHE_SET(cache_type);;
+	this_leaf->number_of_sets = CACHE_SET(cache_type);
 	this_leaf->ways_of_associativity = CACHE_WAY(cache_type);
 	this_leaf->size = this_leaf->number_of_sets *
 	    this_leaf->coherency_line_size * this_leaf->ways_of_associativity;
diff --git a/arch/nds32/kernel/ex-exit.S b/arch/nds32/kernel/ex-exit.S
index 97ba15cd4180..1df02a793364 100644
--- a/arch/nds32/kernel/ex-exit.S
+++ b/arch/nds32/kernel/ex-exit.S
@@ -163,7 +163,7 @@ resume_kernel:
 	gie_disable
 	lwi	$t0, [tsk+#TSK_TI_PREEMPT]
 	bnez	$t0, no_work_pending
-need_resched:
+
 	lwi	$t0, [tsk+#TSK_TI_FLAGS]
 	andi	$p1, $t0, #_TIF_NEED_RESCHED
 	beqz	$p1, no_work_pending
@@ -173,7 +173,7 @@ need_resched:
 	beqz	$t0, no_work_pending
 
 	jal	preempt_schedule_irq
-	b	need_resched
+	b	no_work_pending
 #endif
 
 /*
diff --git a/arch/nds32/kernel/nds32_ksyms.c b/arch/nds32/kernel/nds32_ksyms.c
index 5ecebd0e60cb..20719e42ae36 100644
--- a/arch/nds32/kernel/nds32_ksyms.c
+++ b/arch/nds32/kernel/nds32_ksyms.c
@@ -23,9 +23,3 @@ EXPORT_SYMBOL(memzero);
 EXPORT_SYMBOL(__arch_copy_from_user);
 EXPORT_SYMBOL(__arch_copy_to_user);
 EXPORT_SYMBOL(__arch_clear_user);
-
-/* cache handling */
-EXPORT_SYMBOL(cpu_icache_inval_all);
-EXPORT_SYMBOL(cpu_dcache_wbinval_all);
-EXPORT_SYMBOL(cpu_dma_inval_range);
-EXPORT_SYMBOL(cpu_dma_wb_range);
diff --git a/arch/nds32/kernel/vdso.c b/arch/nds32/kernel/vdso.c
index 016f15891f6d..90bcae6f8554 100644
--- a/arch/nds32/kernel/vdso.c
+++ b/arch/nds32/kernel/vdso.c
@@ -220,6 +220,7 @@ void update_vsyscall(struct timekeeper *tk)
 	vdso_data->xtime_coarse_sec = tk->xtime_sec;
 	vdso_data->xtime_coarse_nsec = tk->tkr_mono.xtime_nsec >>
 	    tk->tkr_mono.shift;
+	vdso_data->hrtimer_res = hrtimer_resolution;
 	vdso_write_end(vdso_data);
 }
 
diff --git a/arch/nds32/kernel/vdso/.gitignore b/arch/nds32/kernel/vdso/.gitignore
new file mode 100644
index 000000000000..f8b69d84238e
--- /dev/null
+++ b/arch/nds32/kernel/vdso/.gitignore
@@ -0,0 +1 @@
+vdso.lds
diff --git a/arch/nds32/kernel/vdso/Makefile b/arch/nds32/kernel/vdso/Makefile
index e6c50a701313..8792fda19a64 100644
--- a/arch/nds32/kernel/vdso/Makefile
+++ b/arch/nds32/kernel/vdso/Makefile
@@ -11,10 +11,8 @@ obj-vdso := note.o datapage.o sigreturn.o gettimeofday.o
 targets := $(obj-vdso) vdso.so vdso.so.dbg
 obj-vdso := $(addprefix $(obj)/, $(obj-vdso))
 
-ccflags-y := -shared -fno-common -fno-builtin
-ccflags-y += -nostdlib -Wl,-soname=linux-vdso.so.1 \
-		$(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
-ccflags-y += -fPIC -Wl,-shared -g
+ccflags-y := -shared -fno-common -fno-builtin -nostdlib -fPIC -Wl,-shared -g \
+	-Wl,-soname=linux-vdso.so.1 -Wl,--hash-style=sysv
 
 # Disable gcov profiling for VDSO code
 GCOV_PROFILE := n
@@ -28,7 +26,7 @@ CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
 $(obj)/vdso.o : $(obj)/vdso.so
 
 # Link rule for the .so file, .lds has to be first
-$(obj)/vdso.so.dbg: $(src)/vdso.lds $(obj-vdso)
+$(obj)/vdso.so.dbg: $(obj)/vdso.lds $(obj-vdso) FORCE
 	$(call if_changed,vdsold)
 
 
@@ -40,9 +38,7 @@ $(obj)/%.so: $(obj)/%.so.dbg FORCE
 # Generate VDSO offsets using helper script
 gen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh
 quiet_cmd_vdsosym = VDSOSYM $@
-define cmd_vdsosym
-	$(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@
-endef
+      cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@
 
 include/generated/vdso-offsets.h: $(obj)/vdso.so.dbg FORCE
 	$(call if_changed,vdsosym)
@@ -65,7 +61,7 @@ gettimeofday.o : gettimeofday.c FORCE
 
 # Actual build commands
 quiet_cmd_vdsold = VDSOL   $@
-      cmd_vdsold = $(CC) $(c_flags) -Wl,-n -Wl,-T $^ -o $@
+      cmd_vdsold = $(CC) $(c_flags) -Wl,-n -Wl,-T $(real-prereqs) -o $@
 quiet_cmd_vdsoas = VDSOA   $@
       cmd_vdsoas = $(CC) $(a_flags) -c -o $@ $<
 quiet_cmd_vdsocc = VDSOA   $@
diff --git a/arch/nds32/kernel/vdso/gettimeofday.c b/arch/nds32/kernel/vdso/gettimeofday.c
index 038721af40e3..b02581891c33 100644
--- a/arch/nds32/kernel/vdso/gettimeofday.c
+++ b/arch/nds32/kernel/vdso/gettimeofday.c
@@ -208,6 +208,8 @@ static notrace int clock_getres_fallback(clockid_t _clk_id,
 
 notrace int __vdso_clock_getres(clockid_t clk_id, struct timespec *res)
 {
+	struct vdso_data *vdata = __get_datapage();
+
 	if (res == NULL)
 		return 0;
 	switch (clk_id) {
@@ -215,7 +217,7 @@ notrace int __vdso_clock_getres(clockid_t clk_id, struct timespec *res)
 	case CLOCK_MONOTONIC:
 	case CLOCK_MONOTONIC_RAW:
 		res->tv_sec = 0;
-		res->tv_nsec = CLOCK_REALTIME_RES;
+		res->tv_nsec = vdata->hrtimer_res;
 		break;
 	case CLOCK_REALTIME_COARSE:
 	case CLOCK_MONOTONIC_COARSE:
diff --git a/arch/nds32/mm/init.c b/arch/nds32/mm/init.c
index 1a4ab1b7525f..55703b03d172 100644
--- a/arch/nds32/mm/init.c
+++ b/arch/nds32/mm/init.c
@@ -260,7 +260,7 @@ void __set_fixmap(enum fixed_addresses idx,
 
 	BUG_ON(idx <= FIX_HOLE || idx >= __end_of_fixed_addresses);
 
-	pte = (pte_t *)&fixmap_pmd_p[pte_index(addr)];;
+	pte = (pte_t *)&fixmap_pmd_p[pte_index(addr)];
 
 	if (pgprot_val(flags)) {
 		set_pte(pte, pfn_pte(phys >> PAGE_SHIFT, flags));