X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/hmcfgusb/blobdiff_plain/f77690c303b7bd05a04603e6383613020cfe1ce6..4371275b6337ea3ae513f1c19463f8b4745d89d8:/hmcfgusb.c

diff --git a/hmcfgusb.c b/hmcfgusb.c
index 9f02480..7ec0714 100644
--- 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, "> ");
 		}