On Sat, September 21, 2013 12:47 pm, Xiaofan Chen wrote:
> On Sat, Sep 21, 2013 at 7:21 AM, Kano <libu...@iporg.org> wrote:
>> Hi,
...
>> The code is basically:
>> For a single interface chip (that always works on many linux/windows) it
>> is:
>> libusb_get_device_list
>> libusb_get_device_descriptor
>> libusb_open
>> libusb_claim_interface 0
>>
>> Instead for a chip with multiple interfaces I am:
>> libusb_get_device_list
>> libusb_get_device_descriptor
>> libusb_open
>> libusb_claim_interface 0
>> libusb_get_device(interface 0 handle)
> Why?
To create a 2nd handle I must have the device.
Since a handle is only associated with a single interface,
I must have multiple handles.
>> libusb_open
> Why?
>
> What if you remove the above two?
I need to talk to both interfaces, not just one
(4 actually - each will have their own thread)
If I change the order, open interface 1 first:
Interface 1 opens OK but fails on opening interface 0 after it.
i.e. same as before
Again with the same error
[ 1.015625] [00000580] libusbx: error [winusbx_open] could not open device
\\.\USB#VID_0403&PID_8350&MI_00#6&2CE4DD9F&0&0000#{C8D1AB34-4B5C-488A-8194-08C26C1A05DA}
(interface 0): [5] Access is denied.
>> (libusb_claim_interface 1) <- never gets here
>>
>> This works on linux but fails on windows on the 2nd open (before
>> claiming
>> the 2nd interface) with:
>> [ 1.209821] [00000f94] libusbx: debug [libusb_open] open 2.2
>> [ 1.209821] [00000f94] libusbx: error [winusbx_open] could not open
>> device
>> \\.\USB#VID_0403&PID_8350&MI_00#6&2CE4DD9F&0&0000#{C8D1AB34-4B5C-488A-8194-08C26C1A05DA}
>> (interface 0): [5] Access is denied.
>>
>> The code is in a github git and the pull request that has the changes
>> for
>> multiple interfaces is:
>> https://github.com/ckolivas/cgminer/pull/492/
>>
>> I've tried this with libusbx-1.0.17.tar.bz2
>> (and also with libusb-1.0.16-rc10.tar.bz2 that is in that git)
>> Both give the same open fail - working on linux but failing on windows
>>
>> A full log up to the failures (at the bottom) can be seen here:
>> pastebin.com/Rx9jmMnU
>>
> --
> Xiaofan
-Kano
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