[Qemu-devel] [PATCH 10/18] usb-host: parse port in /proc/bus/usb/devices scan

[Gerd Hoffmann <kraxel@redhat.com>]

Unfortunaly this is limited to root ports.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 usb-linux.c |   14 ++++++++++++--
 1 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/usb-linux.c b/usb-linux.c
index ef29a76..7995178 100644
--- a/usb-linux.c
+++ b/usb-linux.c
@@ -1483,7 +1483,8 @@ static int usb_host_scan_dev(void *opaque, USBScanFunc *func)
     FILE *f = NULL;
     char line[1024];
     char buf[1024];
-    int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
+    int bus_num, addr, speed, device_count;
+    int class_id, product_id, vendor_id, port;
     char product_name[512];
     int ret = 0;
 
@@ -1521,6 +1522,10 @@ static int usb_host_scan_dev(void *opaque, USBScanFunc *func)
                 goto fail;
             }
             bus_num = atoi(buf);
+            if (get_tag_value(buf, sizeof(buf), line, "Port=", " ") < 0) {
+                goto fail;
+            }
+            port = atoi(buf);
             if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) {
                 goto fail;
             }
@@ -1566,7 +1571,12 @@ static int usb_host_scan_dev(void *opaque, USBScanFunc *func)
     }
     if (device_count && (vendor_id || product_id)) {
         /* Add the last device.  */
-        ret = func(opaque, bus_num, addr, 0, class_id, vendor_id,
+        if (port > 0) {
+            snprintf(buf, sizeof(buf), "%d", port);
+        } else {
+            snprintf(buf, sizeof(buf), "?");
+        }
+        ret = func(opaque, bus_num, addr, buf, class_id, vendor_id,
                    product_id, product_name, speed);
     }
  the_end:
-- 
1.7.1