gracefully handle errors on socket-write

[hmcfgusb] / hmcfgusb.c

diff --git a/hmcfgusb.c b/hmcfgusb.c
index 9f024801b141fab52c4928431c8fd6effa3e3a28..7ec07142553c45b86a587df47c2213632eb7f7df 100644 (file)
--- a/hmcfgusb.c
+++ b/hmcfgusb.c
@@ -225,7 +225,17 @@ static void LIBUSB_CALL hmcfgusb_interrupt(struct libusb_transfer *transfer)
                if (cb_data && cb_data->cb) {
                        if (debug)
                                hexdump(transfer->buffer, transfer->actual_length, "USB > ");
-                       cb_data->cb(transfer->buffer, transfer->actual_length, cb_data->data);
+
+                       if (!cb_data->cb(transfer->buffer, transfer->actual_length, cb_data->data)) {
+                               quit = EIO;
+
+                               if (cb_data && cb_data->dev && cb_data->dev->transfer) {
+                                       libusb_free_transfer(cb_data->dev->transfer);
+                                       cb_data->dev->transfer = NULL;
+                               }
+
+                               return;
+                       }
                } else {
                        hexdump(transfer->buffer, transfer->actual_length, "> ");
                }