4 files changed, 9 insertions, 10 deletions

diff --git a/tools/objtool/arch/x86/decode.c b/tools/objtool/arch/x86/decode.c
index c5c49277cf1a..9ef024fd648c 100644
--- a/tools/objtool/arch/x86/decode.c
+++ b/tools/objtool/arch/x86/decode.c
@@ -105,7 +105,7 @@ bool arch_pc_relative_reloc(struct reloc *reloc)
 #define ADD_OP(op) \
 	if (!(op = calloc(1, sizeof(*op)))) \
 		return -1; \
-	else for (list_add_tail(&op->list, ops_list); op; op = NULL)
+	else for (*ops_list = op, ops_list = &op->next; op; op = NULL)
 
 /*
  * Helpers to decode ModRM/SIB:
@@ -148,7 +148,7 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec
 			    unsigned long offset, unsigned int maxlen,
 			    struct instruction *insn)
 {
-	struct list_head *ops_list = &insn->stack_ops;
+	struct stack_op **ops_list = &insn->stack_ops;
 	const struct elf *elf = file->elf;
 	struct insn ins;
 	int x86_64, ret;
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index b3b423d33cc2..8109d7405297 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -398,7 +398,6 @@ static int decode_instructions(struct objtool_file *file)
 			}
 			memset(insn, 0, sizeof(*insn));
 			INIT_LIST_HEAD(&insn->alts);
-			INIT_LIST_HEAD(&insn->stack_ops);
 			INIT_LIST_HEAD(&insn->call_node);
 
 			insn->sec = sec;
@@ -1331,12 +1330,13 @@ static struct reloc *insn_reloc(struct objtool_file *file, struct instruction *i
 
 static void remove_insn_ops(struct instruction *insn)
 {
-	struct stack_op *op, *tmp;
+	struct stack_op *op, *next;
 
-	list_for_each_entry_safe(op, tmp, &insn->stack_ops, list) {
-		list_del(&op->list);
+	for (op = insn->stack_ops; op; op = next) {
+		next = op->next;
 		free(op);
 	}
+	insn->stack_ops = NULL;
 }
 
 static void annotate_call_site(struct objtool_file *file,
@@ -1781,7 +1781,6 @@ static int handle_group_alt(struct objtool_file *file,
 		}
 		memset(nop, 0, sizeof(*nop));
 		INIT_LIST_HEAD(&nop->alts);
-		INIT_LIST_HEAD(&nop->stack_ops);
 
 		nop->sec = special_alt->new_sec;
 		nop->offset = special_alt->new_off + special_alt->new_len;
@@ -3226,7 +3225,7 @@ static int handle_insn_ops(struct instruction *insn,
 {
 	struct stack_op *op;
 
-	list_for_each_entry(op, &insn->stack_ops, list) {
+	for (op = insn->stack_ops; op; op = op->next) {
 
 		if (update_cfi_state(insn, next_insn, &state->cfi, op))
 			return 1;
diff --git a/tools/objtool/include/objtool/arch.h b/tools/objtool/include/objtool/arch.h
index 73149f8090fa..2b6d2ce4f9a5 100644
--- a/tools/objtool/include/objtool/arch.h
+++ b/tools/objtool/include/objtool/arch.h
@@ -62,9 +62,9 @@ struct op_src {
 };
 
 struct stack_op {
+	struct stack_op *next;
 	struct op_dest dest;
 	struct op_src src;
-	struct list_head list;
 };
 
 struct instruction;
diff --git a/tools/objtool/include/objtool/check.h b/tools/objtool/include/objtool/check.h
index acd7fae59348..23e981999365 100644
--- a/tools/objtool/include/objtool/check.h
+++ b/tools/objtool/include/objtool/check.h
@@ -68,7 +68,7 @@ struct instruction {
 	struct reloc *reloc;
 	struct list_head alts;
 	struct symbol *sym;
-	struct list_head stack_ops;
+	struct stack_op *stack_ops;
 	struct cfi_state *cfi;
 };