Messages in this thread | | | Date | Thu, 17 May 2007 05:45:25 -0700 | From | Greg KH <> | Subject | Re: [linux-usb-devel] ark3116: receive returns negative |
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On Wed, May 16, 2007 at 06:04:45PM +0200, Jan Engelhardt wrote: > Hello, > > > I seem to have problems with the ark3116 driver from 2.6.18.8. This is a > USB-RS232 cable. Just opening the /dev/ttyUSB0 device > gives (this is the > debug output enabled by `modprobe ark3116 debug=1`). > > The lines that look suspicious are > /serial/ark3116.c: 124 < 1 bytes [0xFFFFFFB0] > and > /serial/ark3116.c: ark3116_ioctl cmd 0x5401 not supported
Why is this suspicious? We don't support all ioctls for all usb-serial drivers, perhaps this one is just not really needed?
> I have also seen things like "id here < -62 [0x10]", which would > indicate that usb_control_msg() returned something very negative > (-ETIME!?).
But does the driver seem to work properly?
> Issuing a write() on an open fd to ttyUSB does not generate any further > debug output. Is the driver even complete/functional?
Do you get data through the device properly?
thanks,
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