>>>>> "Uwe" == Uwe Bonnes <bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> writes:
>>>>> "Thomas" == Thomas Klose <thomas.klose@xxxxxxxxxxxxx> writes:
Uwe> In your situation, however it is wrong. Ideas how to handle that
Uwe> situation are welcome.
To clarify the situation.
Device gets plugged, ftdi_sio gets loaded.
First libftdi open calls libusb_detach_kernel_driver() and gets access.
Second libftdi open calls calls again libusb_detach_kernel_driver() and gets
access too.
First try: Make the call to libusb_detach_kernel_driver()
dependant if a kernel driver is loaded:
+ if (libusb_kernel_driver_active(ftdi->usb_dev, ftdi->interface) == 1)
if (libusb_detach_kernel_driver(ftdi->usb_dev, ftdi->interface) !=0)
detach_errno = errno;
This doesn't help, as the second open sees "usbfs" as a valid kernel driver
loaded.
I just sent a patch to libusb-devel, that checks in
libusb_kernel_driver_active() for itself ("usbfs") and returns another
value, so that above libftdi patch works as expected.
Bye
--
Uwe Bonnes bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
--
libftdi - see http://www.intra2net.com/en/developer/libftdi for details.
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