Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM updates from Russell King:

 - lots of build cleanups from Arnd spread throughout the arch/arm tree

 - replace strlcpy() with the preferred strscpy()

 - use sign_extend32() in the module linker

 - drop handle_irq() machine descriptor method

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 9315/1: fiq: include asm/mach/irq.h for prototypes
  ARM: 9314/1: tcm: move tcm_init() prototype to asm/tcm.h
  ARM: 9313/1: vdso: add missing prototypes
  ARM: 9312/1: vfp: include asm/neon.h in vfpmodule.c
  ARM: 9311/1: decompressor: move function prototypes to misc.h
  ARM: 9310/1: xip-kernel: add __inflate_kernel_data prototype
  ARM: 9309/1: add missing syscall prototypes
  ARM: 9308/1: move setup functions to header
  ARM: 9307/1: nommu: include asm/idmap.h
  ARM: 9306/1: cacheflush: avoid __flush_anon_page() missing-prototype warning
  ARM: 9305/1: add clear/copy_user_highpage declarations
  ARM: 9304/1: add prototype for function called only from asm
  ARM: 9303/1: kprobes: avoid missing-declaration warnings
  ARM: 9302/1: traps: hide unused functions on NOMMU
  ARM: 9301/1: dma-mapping: hide unused dma_contiguous_early_fixup function
  ARM: 9300/1: Replace all non-returning strlcpy with strscpy
  ARM: 9299/1: module: use sign_extend32() to extend the signedness
  ARM: 9298/1: Drop custom mdesc->handle_irq()

14 files changed, 124 insertions, 4 deletions

diff --git a/arch/arm/include/asm/ftrace.h b/arch/arm/include/asm/ftrace.h
index 7e9251ca29fe..5be3ddc96a50 100644
--- a/arch/arm/include/asm/ftrace.h
+++ b/arch/arm/include/asm/ftrace.h
@@ -75,6 +75,10 @@ static inline bool arch_syscall_match_sym_name(const char *sym,
 	return !strcasecmp(sym, name);
 }
 
+void prepare_ftrace_return(unsigned long *parent, unsigned long self,
+			   unsigned long frame_pointer,
+			   unsigned long stack_pointer);
+
 #endif /* ifndef __ASSEMBLY__ */
 
 #endif /* _ASM_ARM_FTRACE */
diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h
index 9349e7a82c9c..2b18a258204d 100644
--- a/arch/arm/include/asm/mach/arch.h
+++ b/arch/arm/include/asm/mach/arch.h
@@ -56,7 +56,6 @@ struct machine_desc {
 	void			(*init_time)(void);
 	void			(*init_machine)(void);
 	void			(*init_late)(void);
-	void			(*handle_irq)(struct pt_regs *);
 	void			(*restart)(enum reboot_mode, const char *);
 };
 
diff --git a/arch/arm/include/asm/page.h b/arch/arm/include/asm/page.h
index 74bb5947b387..28c63d172a96 100644
--- a/arch/arm/include/asm/page.h
+++ b/arch/arm/include/asm/page.h
@@ -113,6 +113,28 @@ struct cpu_user_fns {
 			unsigned long vaddr, struct vm_area_struct *vma);
 };
 
+void fa_copy_user_highpage(struct page *to, struct page *from,
+	unsigned long vaddr, struct vm_area_struct *vma);
+void fa_clear_user_highpage(struct page *page, unsigned long vaddr);
+void feroceon_copy_user_highpage(struct page *to, struct page *from,
+	unsigned long vaddr, struct vm_area_struct *vma);
+void feroceon_clear_user_highpage(struct page *page, unsigned long vaddr);
+void v4_mc_copy_user_highpage(struct page *to, struct page *from,
+	unsigned long vaddr, struct vm_area_struct *vma);
+void v4_mc_clear_user_highpage(struct page *page, unsigned long vaddr);
+void v4wb_copy_user_highpage(struct page *to, struct page *from,
+	unsigned long vaddr, struct vm_area_struct *vma);
+void v4wb_clear_user_highpage(struct page *page, unsigned long vaddr);
+void v4wt_copy_user_highpage(struct page *to, struct page *from,
+	unsigned long vaddr, struct vm_area_struct *vma);
+void v4wt_clear_user_highpage(struct page *page, unsigned long vaddr);
+void xsc3_mc_copy_user_highpage(struct page *to, struct page *from,
+	unsigned long vaddr, struct vm_area_struct *vma);
+void xsc3_mc_clear_user_highpage(struct page *page, unsigned long vaddr);
+void xscale_mc_copy_user_highpage(struct page *to, struct page *from,
+	unsigned long vaddr, struct vm_area_struct *vma);
+void xscale_mc_clear_user_highpage(struct page *page, unsigned long vaddr);
+
 #ifdef MULTI_USER
 extern struct cpu_user_fns cpu_user;
 
diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h
index 483b8ddfcb82..7f44e88d1f25 100644
--- a/arch/arm/include/asm/ptrace.h
+++ b/arch/arm/include/asm/ptrace.h
@@ -193,5 +193,8 @@ static inline unsigned long it_advance(unsigned long cpsr)
 	return cpsr;
 }
 
+int syscall_trace_enter(struct pt_regs *regs);
+void syscall_trace_exit(struct pt_regs *regs);
+
 #endif /* __ASSEMBLY__ */
 #endif
diff --git a/arch/arm/include/asm/setup.h b/arch/arm/include/asm/setup.h
index ba0872a8dcda..28ca2a17394a 100644
--- a/arch/arm/include/asm/setup.h
+++ b/arch/arm/include/asm/setup.h
@@ -28,4 +28,11 @@ extern void save_atags(const struct tag *tags);
 static inline void save_atags(const struct tag *tags) { }
 #endif
 
+struct machine_desc;
+void init_default_cache_policy(unsigned long);
+void paging_init(const struct machine_desc *desc);
+void early_mm_init(const struct machine_desc *);
+void adjust_lowmem_bounds(void);
+void setup_dma_zone(const struct machine_desc *desc);
+
 #endif
diff --git a/arch/arm/include/asm/signal.h b/arch/arm/include/asm/signal.h
index 430be7774402..8b84092d1518 100644
--- a/arch/arm/include/asm/signal.h
+++ b/arch/arm/include/asm/signal.h
@@ -22,4 +22,9 @@ typedef struct {
 #define __ARCH_HAS_SA_RESTORER
 
 #include <asm/sigcontext.h>
+
+void do_rseq_syscall(struct pt_regs *regs);
+int do_work_pending(struct pt_regs *regs, unsigned int thread_flags,
+		    int syscall);
+
 #endif
diff --git a/arch/arm/include/asm/spectre.h b/arch/arm/include/asm/spectre.h
index 85f9e538fb32..d9c28b3b6b62 100644
--- a/arch/arm/include/asm/spectre.h
+++ b/arch/arm/include/asm/spectre.h
@@ -35,4 +35,8 @@ static inline void spectre_v2_update_state(unsigned int state,
 
 int spectre_bhb_update_vectors(unsigned int method);
 
+void cpu_v7_ca8_ibe(void);
+void cpu_v7_ca15_ibe(void);
+void cpu_v7_bugs_init(void);
+
 #endif
diff --git a/arch/arm/include/asm/suspend.h b/arch/arm/include/asm/suspend.h
index 506314265c6f..be81b9ca2ea1 100644
--- a/arch/arm/include/asm/suspend.h
+++ b/arch/arm/include/asm/suspend.h
@@ -13,5 +13,6 @@ extern void cpu_resume(void);
 extern void cpu_resume_no_hyp(void);
 extern void cpu_resume_arm(void);
 extern int cpu_suspend(unsigned long, int (*)(unsigned long));
+extern void __cpu_suspend_save(u32 *ptr, u32 ptrsz, u32 sp, u32 *save_ptr);
 
 #endif
diff --git a/arch/arm/include/asm/syscalls.h b/arch/arm/include/asm/syscalls.h
new file mode 100644
index 000000000000..5912e7cffa6a
--- /dev/null
+++ b/arch/arm/include/asm/syscalls.h
@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_SYSCALLS_H
+#define __ASM_SYSCALLS_H
+
+#include <linux/linkage.h>
+#include <linux/types.h>
+
+struct pt_regs;
+asmlinkage int sys_sigreturn(struct pt_regs *regs);
+asmlinkage int sys_rt_sigreturn(struct pt_regs *regs);
+asmlinkage long sys_arm_fadvise64_64(int fd, int advice,
+				     loff_t offset, loff_t len);
+
+struct oldabi_stat64;
+asmlinkage long sys_oabi_stat64(const char __user * filename,
+				struct oldabi_stat64 __user * statbuf);
+asmlinkage long sys_oabi_lstat64(const char __user * filename,
+				 struct oldabi_stat64 __user * statbuf);
+asmlinkage long sys_oabi_fstat64(unsigned long fd,
+				 struct oldabi_stat64 __user * statbuf);
+asmlinkage long sys_oabi_fstatat64(int dfd,
+				   const char __user *filename,
+				   struct oldabi_stat64  __user *statbuf,
+				   int flag);
+asmlinkage long sys_oabi_fcntl64(unsigned int fd, unsigned int cmd,
+				 unsigned long arg);
+struct oabi_epoll_event;
+asmlinkage long sys_oabi_epoll_ctl(int epfd, int op, int fd,
+				   struct oabi_epoll_event __user *event);
+struct oabi_sembuf;
+struct old_timespec32;
+asmlinkage long sys_oabi_semtimedop(int semid,
+				    struct oabi_sembuf __user *tsops,
+				    unsigned nsops,
+				    const struct old_timespec32 __user *timeout);
+asmlinkage long sys_oabi_semop(int semid, struct oabi_sembuf __user *tsops,
+			       unsigned nsops);
+asmlinkage int sys_oabi_ipc(uint call, int first, int second, int third,
+			    void __user *ptr, long fifth);
+struct sockaddr;
+asmlinkage long sys_oabi_bind(int fd, struct sockaddr __user *addr, int addrlen);
+asmlinkage long sys_oabi_connect(int fd, struct sockaddr __user *addr, int addrlen);
+asmlinkage long sys_oabi_sendto(int fd, void __user *buff,
+				size_t len, unsigned flags,
+				struct sockaddr __user *addr,
+				int addrlen);
+struct user_msghdr;
+asmlinkage long sys_oabi_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
+asmlinkage long sys_oabi_socketcall(int call, unsigned long __user *args);
+
+#endif
diff --git a/arch/arm/include/asm/tcm.h b/arch/arm/include/asm/tcm.h
index d8bd8a4b0ede..e1f7dca86a22 100644
--- a/arch/arm/include/asm/tcm.h
+++ b/arch/arm/include/asm/tcm.h
@@ -9,9 +9,7 @@
 #ifndef __ASMARM_TCM_H
 #define __ASMARM_TCM_H
 
-#ifndef CONFIG_HAVE_TCM
-#error "You should not be including tcm.h unless you have a TCM!"
-#endif
+#ifdef CONFIG_HAVE_TCM
 
 #include <linux/compiler.h>
 
@@ -29,4 +27,11 @@ void tcm_free(void *addr, size_t len);
 bool tcm_dtcm_present(void);
 bool tcm_itcm_present(void);
 
+void __init tcm_init(void);
+#else
+/* No TCM support, just blank inlines to be optimized out */
+static inline void tcm_init(void)
+{
+}
+#endif
 #endif
diff --git a/arch/arm/include/asm/traps.h b/arch/arm/include/asm/traps.h
index 987fefb0a4db..0aaefe3e1700 100644
--- a/arch/arm/include/asm/traps.h
+++ b/arch/arm/include/asm/traps.h
@@ -35,4 +35,13 @@ extern void ptrace_break(struct pt_regs *regs);
 
 extern void *vectors_page;
 
+asmlinkage void dump_backtrace_stm(u32 *stack, u32 instruction, const char *loglvl);
+asmlinkage void do_undefinstr(struct pt_regs *regs);
+asmlinkage void handle_fiq_as_nmi(struct pt_regs *regs);
+asmlinkage void bad_mode(struct pt_regs *regs, int reason);
+asmlinkage int arm_syscall(int no, struct pt_regs *regs);
+asmlinkage void baddataabort(int code, unsigned long instr, struct pt_regs *regs);
+asmlinkage void __div0(void);
+asmlinkage void handle_bad_stack(struct pt_regs *regs);
+
 #endif
diff --git a/arch/arm/include/asm/unwind.h b/arch/arm/include/asm/unwind.h
index b51f85417f58..d60b09a5acfc 100644
--- a/arch/arm/include/asm/unwind.h
+++ b/arch/arm/include/asm/unwind.h
@@ -40,6 +40,10 @@ extern void unwind_table_del(struct unwind_table *tab);
 extern void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk,
 			     const char *loglvl);
 
+void __aeabi_unwind_cpp_pr0(void);
+void __aeabi_unwind_cpp_pr1(void);
+void __aeabi_unwind_cpp_pr2(void);
+
 #endif	/* !__ASSEMBLY__ */
 
 #ifdef CONFIG_ARM_UNWIND
diff --git a/arch/arm/include/asm/vdso.h b/arch/arm/include/asm/vdso.h
index 5b85889f82ee..422c3afa806a 100644
--- a/arch/arm/include/asm/vdso.h
+++ b/arch/arm/include/asm/vdso.h
@@ -24,6 +24,11 @@ static inline void arm_install_vdso(struct mm_struct *mm, unsigned long addr)
 
 #endif /* CONFIG_VDSO */
 
+int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts);
+int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts);
+int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz);
+int __vdso_clock_getres(clockid_t clock_id, struct old_timespec32 *res);
+
 #endif /* __ASSEMBLY__ */
 
 #endif /* __KERNEL__ */
diff --git a/arch/arm/include/asm/vfp.h b/arch/arm/include/asm/vfp.h
index 157ea3426158..5b57b8768bac 100644
--- a/arch/arm/include/asm/vfp.h
+++ b/arch/arm/include/asm/vfp.h
@@ -102,6 +102,7 @@
 
 #ifndef __ASSEMBLY__
 void vfp_disable(void);
+void VFP_bounce(u32 trigger, u32 fpexc, struct pt_regs *regs);
 #endif
 
 #endif /* __ASM_VFP_H */