Recent changes to patches

#16 allow zero length control transfer (without buffer)

Xiaofan Chen — Thu, 14 Oct 2021 00:48:05 -0000

status: open --> closed

#16 allow zero length control transfer (without buffer)

Xiaofan Chen — Wed, 13 Oct 2021 13:50:03 -0000

Thanks. We no longer use Sourceforge for development. Please use github instead. Thanks.

Ref: https://github.com/mcuee/libusb-win32/issues/21

allow zero length control transfer (without buffer)

Tormod Volden — Wed, 13 Oct 2021 10:37:48 -0000

Using for instance libusbk.dll 3.0.7.0 (the version currently installed with Zadig) a control transfer with zero length will fail (see https://github.com/libusb/libusb/issues/1006). I suspect this is due to the check on transfer_buffer_mdl in src/driver/ioctl.c since the same check for bulk transfer write is explicitly not done. The second patch changes the control transfer check to be consistent to the bulk transfer check.

The first patch just adds missing debug tags. The second patch applies on top.

I don't have the setup to rebuild and test libusb0.sys so I can only assume this is correct without verification by own testing. BTW this issue doesn't show when using the recently released libusbk.dll 3.0.8.0 because the control transfers are done differently here.

Driver error message caught with DebugView:
libusb0-sys:err [dispatch_ioctl] (null): invalid transfer request

allow zero length control transfer (without buffer)

Tormod Volden — Wed, 13 Oct 2021 10:37:48 -0000

Ticket 16 has been modified: allow zero length control transfer (without buffer)
Edited By: Xiaofan Chen (xiaofanc)
Status updated: 'open' => 'closed'

Ticket 12 discussion

Xiaofan Chen — Mon, 16 Aug 2021 03:03:04 -0000

status: pending --> wont-fix
Group: --> Unstable_(example)

#13 Distinguishing between SEM_TIMEOUT and OPERATION_ABORTED

Xiaofan Chen — Mon, 16 Aug 2021 03:02:45 -0000

status: pending --> wont-fix
Group: --> Unstable_(example)

#14 usb_free_async should check CloseHandle return value

Xiaofan Chen — Mon, 16 Aug 2021 03:02:27 -0000

status: open --> wont-fix
Group: --> Unstable_(example)

Ticket 15 discussion

Xiaofan Chen — Mon, 16 Aug 2021 03:02:07 -0000

status: pending --> wont-fix

#11 Get DevicePropertyDriverKeyName

Fondation — Tue, 22 Apr 2014 15:10:25 -0000

Hello, I search the méthod for watching the source code of this patch 0.1.12.2 but i have not understand the solution for look that here ?

Ticket 15 discussion

Benjamin Moody — Thu, 09 Aug 2012 03:46:51 -0000

The attached patch is the same as the above, but only includes usb_cancel_async and usb_reap_async_nocancel.