libusb-1.0 and RH5.3 segv

[Patras, George]

Hello,

I'm having a problem using libusb-1.0.3 and RedHat Enterprise 5.3 (2.6.18 kern)
I'm getting a segv in libusb_get_device_decriptor() - The same code works fine
however on an Ubuntu 9.04 system.
I get the same error with the lsusb sample code in examples dir of libusb-1.0.3

-------
(gdb)
libusb:error [initialize_device] open failed, ret=-1 errno=2
[New Thread 0xb7f0e6c0 (LWP 4149)]

Program received signal SIGSEGV, Segmentation fault.
0x005c2cdd in op_get_device_descriptor (dev=0xbff3e798, buffer=0xbff3e6fa
"\004\b\001", host_endian=0xbff3e70c) at os/linux_usbfs.c:204
204             memcpy(buffer, priv->dev_descriptor, DEVICE_DESC_LENGTH);
(gdb) Quit
--------

Any help would be greatly appreciated,
George

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[Tim Roberts]

Patras, George wrote:
> I'm having a problem using libusb-1.0.3 and RedHat Enterprise 5.3 (2.6.18 kern)
> I'm getting a segv in libusb_get_device_decriptor() - The same code works fine
> however on an Ubuntu 9.04 system.
> I get the same error with the lsusb sample code in examples dir of libusb-1.0.3
>
> -------
> (gdb)
> libusb:error [initialize_device] open failed, ret=-1 errno=2
>  

Well, that's the key, isn't it?  Do you know that your device is being
recognized by the hardware?  Are you running this as root, or do you
have udev rules to open the permissions?

--
Tim Roberts, timr@...
Providenza & Boekelheide, Inc.


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