X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/hmcfgusb/blobdiff_plain/3b35a8c145cb567b625d32030ba3a287b478dd43..325ed7030d39536af863e9c49b5fa04ac0a28d5d:/hmcfgusb.c

diff --git a/hmcfgusb.c b/hmcfgusb.c
index 0e11866..83c9719 100644
--- a/hmcfgusb.c
+++ b/hmcfgusb.c
@@ -285,8 +285,11 @@ static void LIBUSB_CALL hmcfgusb_interrupt(struct libusb_transfer *transfer)
 	if (err != 0) {
 		fprintf(stderr, "Can't re-submit transfer: %s\n", usb_strerror(err));
 		libusb_free_transfer(transfer);
-		cb_data->dev->transfer = NULL;
-		free(cb_data);
+		if (cb_data) {
+			if (cb_data->dev)
+				cb_data->dev->transfer = NULL;
+			free(cb_data);
+		}
 	}
 }