From c37d71b1a31d26a4790166e2508822b18934a5c0 Mon Sep 17 00:00:00 2001
From: Zdenek Dohnal <zdohnal@redhat.com>
Date: Tue, 13 Apr 2021 15:44:14 +0200
Subject: [PATCH] backend/usb-libusb.c: Use 60s timeout for reading at
 backchannel

Some older models malfunction if timeout is too short.
---
 CHANGES.md           | 1 +
 backend/usb-libusb.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/backend/usb-libusb.c b/backend/usb-libusb.c
index d6b0eb423..fbb0d9d89 100644
--- a/backend/usb-libusb.c
+++ b/backend/usb-libusb.c
@@ -1704,7 +1704,7 @@ static void *read_thread(void *reference)
     readstatus = libusb_bulk_transfer(g.printer->handle,
 				      g.printer->read_endp,
 				      readbuffer, rbytes,
-				      &rbytes, 250);
+				      &rbytes, 60000);
     if (readstatus == LIBUSB_SUCCESS && rbytes > 0)
     {
       fprintf(stderr, "DEBUG: Read %d bytes of back-channel data...\n", (int)rbytes);
-- 
2.26.3