Re: [libusb] libusb_control_transfer return -1 errorno 16

[Xiaofan C. <xia...@gm...>]

On Fri, Aug 6, 2021 at 11:01 AM 俊哲 <873...@qq...> wrote:
>
> [ 3.261012] [0005034f] libusb: debug [libusb_handle_events_timeout_completed] doing our own event handling
> [ 3.261555] [0005034f] libusb: debug [handle_events] poll() 3 fds with timeout in 10000ms
> [ 3.342028] [00050350] libusb: debug [linux_get_device_address] getting address for device: 1-4 detached: 0
> [ 3.342039] [00050350] libusb: debug [linux_get_device_address] scan 1-4
> [ 3.342087] [00050350] libusb: debug [linux_get_device_address] bus=1 dev=55
> [ 3.342091] [00050350] libusb: debug [udev_hotplug_event] udev hotplug event. action: bind.
> [ 3.342094] [00050350] libusb: error [udev_hotplug_event] ignoring udev action bind
> [13.270864] [0005034f] libusb: debug [handle_events] poll() returned 0
> [13.270888] [0005034f] libusb: debug [libusb_claim_interface] interface 3
> [13.463141] [0005034f] libusb: debug [libusb_alloc_transfer] transfer 0x7fab68018790
> [13.463160] [0005034f] libusb: debug [libusb_submit_transfer] transfer 0x7fab68018790
> [13.463352] [0005034f] libusb: error [submit_control_transfer] submiturb failed error -1 errno=16
> [13.463357] [0005034f] libusb: debug [libusb_free_transfer] transfer 0x7fab68018790
> -1
> [13.463404] [0005034f] libusb: debug [libusb_handle_events_timeout_completed] doing our own event handling
> [13.463408] [0005034f] libusb: debug [handle_events] poll() 3 fds with timeout in 10000ms
>
> Hi
> Above is part of the logs where error occurred,I can see that I successfully claimed the interface 3,
> so I assume the kernel detachment is ok ?  thanks
>

Yes, that is correct. Then you need to troubleshoot further.

Supposedly you can use dfu-util if your device is compliant to DFU
specifications,
have you tried that?
http://dfu-util.sourceforge.net/

-- 
Xiaofan