livepatch: Replace snprintf() with sysfs_emit()

Let's use sysfs_emit() instead of snprintf().

Suggested-by: Miroslav Benes <[email protected]>
Signed-off-by: Yafang Shao <[email protected]>
Reviewed-by: Petr Mladek <[email protected]>
Acked-by: Miroslav Benes <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Petr Mladek <[email protected]>

Author: laoar

kernel/livepatch/core.c

@@ -402,7 +402,7 @@ static ssize_t enabled_show(struct kobject *kobj,
 	struct klp_patch *patch;
 
 	patch = container_of(kobj, struct klp_patch, kobj);
-	return snprintf(buf, PAGE_SIZE-1, "%d\n", patch->enabled);
+	return sysfs_emit(buf, "%d\n", patch->enabled);
 }
 
 static ssize_t transition_show(struct kobject *kobj,
@@ -411,8 +411,7 @@ static ssize_t transition_show(struct kobject *kobj,
 	struct klp_patch *patch;
 
 	patch = container_of(kobj, struct klp_patch, kobj);
-	return snprintf(buf, PAGE_SIZE-1, "%d\n",
-			patch == klp_transition_patch);
+	return sysfs_emit(buf, "%d\n", patch == klp_transition_patch);
 }
 
 static ssize_t force_store(struct kobject *kobj, struct kobj_attribute *attr,