From bb1a773d5b6bf018bf84fdb3fbba01d3ef54e2c9 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 22 May 2020 20:02:02 -0400
Subject: kill unused dump_fpu() instances

dump_fpu() is used only on the architectures that support elf
and have neither CORE_DUMP_USE_REGSET nor ELF_CORE_COPY_FPREGS
defined.

Currently that's csky, m68k, microblaze, nds32 and unicore32.  The rest
of the instances are dead code.

NB: THIS MUST GO AFTER ELF_FDPIC CONVERSION

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/sh/include/asm/fpu.h   |  5 -----
 arch/sh/kernel/process_32.c | 18 ------------------
 arch/sh/kernel/ptrace_32.c  |  2 +-
 3 files changed, 1 insertion(+), 24 deletions(-)

(limited to 'arch/sh')

diff --git a/arch/sh/include/asm/fpu.h b/arch/sh/include/asm/fpu.h
index 43cfaf929aa7..04584be8986c 100644
--- a/arch/sh/include/asm/fpu.h
+++ b/arch/sh/include/asm/fpu.h
@@ -37,11 +37,6 @@ struct user_regset;
 extern int do_fpu_inst(unsigned short, struct pt_regs *);
 extern int init_fpu(struct task_struct *);
 
-extern int fpregs_get(struct task_struct *target,
-		      const struct user_regset *regset,
-		      unsigned int pos, unsigned int count,
-		      void *kbuf, void __user *ubuf);
-
 static inline void __unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs)
 {
 	if (task_thread_info(tsk)->status & TS_USEDFPU) {
diff --git a/arch/sh/kernel/process_32.c b/arch/sh/kernel/process_32.c
index 6ab397bc47ed..7a59a63560c5 100644
--- a/arch/sh/kernel/process_32.c
+++ b/arch/sh/kernel/process_32.c
@@ -93,24 +93,6 @@ void release_thread(struct task_struct *dead_task)
 	/* do nothing */
 }
 
-/* Fill in the fpu structure for a core dump.. */
-int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
-{
-	int fpvalid = 0;
-
-#if defined(CONFIG_SH_FPU)
-	struct task_struct *tsk = current;
-
-	fpvalid = !!tsk_used_math(tsk);
-	if (fpvalid)
-		fpvalid = !fpregs_get(tsk, NULL,
-				      (struct membuf){fpu, sizeof(*fpu)});
-#endif
-
-	return fpvalid;
-}
-EXPORT_SYMBOL(dump_fpu);
-
 asmlinkage void ret_from_fork(void);
 asmlinkage void ret_from_kernel_thread(void);
 
diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c
index 5c93bdb6c41a..609b7c917e6e 100644
--- a/arch/sh/kernel/ptrace_32.c
+++ b/arch/sh/kernel/ptrace_32.c
@@ -165,7 +165,7 @@ static int genregs_set(struct task_struct *target,
 }
 
 #ifdef CONFIG_SH_FPU
-int fpregs_get(struct task_struct *target,
+static int fpregs_get(struct task_struct *target,
 	       const struct user_regset *regset,
 	       struct membuf to)
 {
-- 
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