[PATCH v1 2/3] LoongArch: Check return values for set_memory_{rw,rox}

[Tiezhu Yang]

set_memory_rw() and set_memory_rox() may failed, it should check the
return values and return immediately in larch_insn_text_copy().

Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>
---
 arch/loongarch/kernel/inst.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/arch/loongarch/kernel/inst.c b/arch/loongarch/kernel/inst.c
index 7545ae3c796e..77da3b886dcb 100644
--- a/arch/loongarch/kernel/inst.c
+++ b/arch/loongarch/kernel/inst.c
@@ -258,6 +258,7 @@ static int text_copy_cb(void *data)
 int larch_insn_text_copy(void *dst, void *src, size_t len)
 {
 	int ret = 0;
+	int err = 0;
 	size_t start, end;
 	struct insn_copy copy = {
 		.dst = dst,
@@ -275,9 +276,19 @@ int larch_insn_text_copy(void *dst, void *src, size_t len)
 	start = round_down((size_t)dst, PAGE_SIZE);
 	end   = round_up((size_t)dst + len, PAGE_SIZE);
 
-	set_memory_rw(start, (end - start) / PAGE_SIZE);
+	err = set_memory_rw(start, (end - start) / PAGE_SIZE);
+	if (err) {
+		pr_info("%s: set_memory_rw failed\n", __func__);
+		return err;
+	}
+
 	ret = stop_machine_cpuslocked(text_copy_cb, &copy, cpu_online_mask);
-	set_memory_rox(start, (end - start) / PAGE_SIZE);
+
+	err = set_memory_rox(start, (end - start) / PAGE_SIZE);
+	if (err) {
+		pr_info("%s: set_memory_rox failed\n", __func__);
+		return err;
+	}
 
 	return ret;
 }
-- 
2.42.0