1 files changed, 45 insertions, 0 deletions

diff --git a/drivers/rapidio/rio-sysfs.c b/drivers/rapidio/rio-sysfs.c
index 4dbe360989be..66d4acd5e18f 100644
--- a/drivers/rapidio/rio-sysfs.c
+++ b/drivers/rapidio/rio-sysfs.c
@@ -285,3 +285,48 @@ void rio_remove_sysfs_dev_files(struct rio_dev *rdev)
                         rdev->rswitch->sw_sysfs(rdev, RIO_SW_SYSFS_REMOVE);
         }
 }
+
+static ssize_t bus_scan_store(struct bus_type *bus, const char *buf,
+                                size_t count)
+{
+        long val;
+        struct rio_mport *port = NULL;
+        int rc;
+
+        if (kstrtol(buf, 0, &val) < 0)
+                return -EINVAL;
+
+        if (val == RIO_MPORT_ANY) {
+                rc = rio_init_mports();
+                goto exit;
+        }
+
+        if (val < 0 || val >= RIO_MAX_MPORTS)
+                return -EINVAL;
+
+        port = rio_find_mport((int)val);
+
+        if (!port) {
+                pr_debug("RIO: %s: mport_%d not available\n",
+                         __func__, (int)val);
+                return -EINVAL;
+        }
+
+        if (!port->nscan)
+                return -EINVAL;
+
+        if (port->host_deviceid >= 0)
+                rc = port->nscan->enumerate(port, 0);
+        else
+                rc = port->nscan->discover(port, RIO_SCAN_ENUM_NO_WAIT);
+exit:
+        if (!rc)
+                rc = count;
+
+        return rc;
+}
+
+struct bus_attribute rio_bus_attrs[] = {
+        __ATTR(scan, (S_IWUSR|S_IWGRP), NULL, bus_scan_store),
+        __ATTR_NULL
+};