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-rw-r--r--hw/usb/bus.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/hw/usb/bus.c b/hw/usb/bus.c
index b17bda3b29..2b11041451 100644
--- a/hw/usb/bus.c
+++ b/hw/usb/bus.c
@@ -612,8 +612,8 @@ static char *usb_get_fw_dev_path(DeviceState *qdev)
             in++;
         } else {
             /* the device itself */
-            pos += snprintf(fw_path + pos, fw_len - pos, "%s@%lx",
-                            qdev_fw_name(qdev), nr);
+            snprintf(fw_path + pos, fw_len - pos, "%s@%lx",
+                     qdev_fw_name(qdev), nr);
             break;
         }
     }