Greetings,
We recently upgraded from 2.4.24 to 2.4.28 and the problem described
below appeared. I have tested it on 2.4.30 and the fault still exists.
It is something to do with usb serial. We are actually using the
ftdi_sio module but a quick diff suggests it hasn't changed much. I am
not 100% sure what is going on but we are sending out various short
commands (11 bytes) to an external device. Most work just fine but one
using one sequence seems to cause the driver to loop and continually
send out the same command. The application keeps sending other commands
but eventually the write () blocks and that's that.
Examining the packet that caused the problem showed it was very similar
to the others but it contained 0x0a. This obviously stuck out as being a
candidate for some sort of translation problem.
I also built a 2.4.28 kernel with the ftdi_sio and usbserial code from
the 2.4.24 release. It also failed. This was a surprise and I am
wondering of I did it correctly.
I don't have the failing equipment with me here but will return to site
next week. I would appreciate any words of wisdom on the problem.
--
Ian Leonard
Please ignore spelling and punctuation - I did.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]