s390/disassembler: remove insn_to_mnemonic()

insn_to_mnemonic() was introduced ages ago for KVM debugging, but is
unused in the meantime. Therefore remove it.

Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

2 files changed, 0 insertions, 29 deletions

diff --git a/arch/s390/include/asm/dis.h b/arch/s390/include/asm/dis.h
index 37f617dfbede..793508c8fc48 100644
--- a/arch/s390/include/asm/dis.h
+++ b/arch/s390/include/asm/dis.h
@@ -44,7 +44,6 @@ struct pt_regs;
 
 void show_code(struct pt_regs *regs);
 void print_fn_code(unsigned char *code, unsigned long len);
-int insn_to_mnemonic(unsigned char *instruction, char *buf, unsigned int len);
 struct s390_insn *find_insn(unsigned char *code);
 
 static inline int is_known_insn(unsigned char *code)
diff --git a/arch/s390/kernel/dis.c b/arch/s390/kernel/dis.c
index 94e96a7bd6d8..2cf4a084763e 100644
--- a/arch/s390/kernel/dis.c
+++ b/arch/s390/kernel/dis.c
@@ -1961,34 +1961,6 @@ struct s390_insn *find_insn(unsigned char *code)
         return NULL;
 }
 
-/**
- * insn_to_mnemonic - decode an s390 instruction
- * @instruction: instruction to decode
- * @buf: buffer to fill with mnemonic
- * @len: length of buffer
- *
- * Decode the instruction at @instruction and store the corresponding
- * mnemonic into @buf of length @len.
- * @buf is left unchanged if the instruction could not be decoded.
- * Returns:
- *  %0 on success, %-ENOENT if the instruction was not found.
- */
-int insn_to_mnemonic(unsigned char *instruction, char *buf, unsigned int len)
-{
-        struct s390_insn *insn;
-
-        insn = find_insn(instruction);
-        if (!insn)
-                return -ENOENT;
-        if (insn->name[0] == '\0')
-                snprintf(buf, len, "%s",
-                         long_insn_name[(int) insn->name[1]]);
-        else
-                snprintf(buf, len, "%.5s", insn->name);
-        return 0;
-}
-EXPORT_SYMBOL_GPL(insn_to_mnemonic);
-
 static int print_insn(char *buffer, unsigned char *code, unsigned long addr)
 {
         struct s390_insn *insn;