1 files changed, 23 insertions, 0 deletions

diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c
index 41ecc08b1cf7..afbdee74147d 100644
--- a/drivers/s390/cio/chp.c
+++ b/drivers/s390/cio/chp.c
@@ -384,6 +384,28 @@ static ssize_t chp_chid_external_show(struct device *dev,
 }
 static DEVICE_ATTR(chid_external, 0444, chp_chid_external_show, NULL);
 
+static ssize_t util_string_read(struct file *filp, struct kobject *kobj,
+                                struct bin_attribute *attr, char *buf,
+                                loff_t off, size_t count)
+{
+        struct channel_path *chp = to_channelpath(kobj_to_dev(kobj));
+        ssize_t rc;
+
+        mutex_lock(&chp->lock);
+        rc = memory_read_from_buffer(buf, count, &off, chp->desc_fmt3.util_str,
+                                     sizeof(chp->desc_fmt3.util_str));
+        mutex_unlock(&chp->lock);
+
+        return rc;
+}
+static BIN_ATTR_RO(util_string,
+                   sizeof(((struct channel_path_desc_fmt3 *)0)->util_str));
+
+static struct bin_attribute *chp_bin_attrs[] = {
+        &bin_attr_util_string,
+        NULL,
+};
+
 static struct attribute *chp_attrs[] = {
         &dev_attr_status.attr,
         &dev_attr_configure.attr,
@@ -396,6 +418,7 @@ static struct attribute *chp_attrs[] = {
 };
 static struct attribute_group chp_attr_group = {
         .attrs = chp_attrs,
+        .bin_attrs = chp_bin_attrs,
 };
 static const struct attribute_group *chp_attr_groups[] = {
         &chp_attr_group,