From 6e31aa17271f90a443591719089688bbf2040765 Mon Sep 17 00:00:00 2001 From: Kristof Robot Date: Sun, 8 Dec 2013 15:46:50 +0100 Subject: [PATCH] kinect_upload_fw: fix setting configuration for some devices MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit On some Kinect devices where the desired configuration is already the currently active one libusb_set_configuration() fails in some way causing the subsequent bulk transfer to fail, and the program to exit, with this message: libusbx: error [op_set_configuration] failed, error -1 errno 110 About to send: 09 20 02 06 01 00 00 00 60 00 00 00 00 00 00 00 15 00 00 00 00 00 00 00 libusbx: error [submit_bulk_transfer] submiturb failed error -1 errno=2 Error: res: -1    transferred: 0 (expected 24) Only set the desired configuration if it hasn't been set already. This prevents the problems from above. Do the configuration check as illustrated in http://libusbx.sourceforge.net/api-1.0/caveats.html that is by checking that the current configuration is still the desired one after claiming the device. --- kinect_upload_fw/kinect_upload_fw.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/kinect_upload_fw/kinect_upload_fw.c b/kinect_upload_fw/kinect_upload_fw.c index b2188d6..e3b72db 100644 --- a/kinect_upload_fw/kinect_upload_fw.c +++ b/kinect_upload_fw/kinect_upload_fw.c @@ -155,9 +155,19 @@ int main(int argc, char** argv) { goto fail_libusb_open; } - libusb_set_configuration(dev, 1); + int current_configuration = 0; + libusb_get_configuration(dev, ¤t_configuration); + if (current_configuration != 1) + libusb_set_configuration(dev, 1); + libusb_claim_interface(dev, 0); + libusb_get_configuration(dev, ¤t_configuration); + if (current_configuration != 1) { + res = -ENODEV; + goto cleanup; + } + seq = 1; bootloader_command cmd; -- 2.1.4