On Tuesday 19 April 2016 10:26 PM, Alex Henrie wrote:
2016-04-19 10:44 GMT-06:00 Sudip Mukherjee <sudipm.mukherjee@xxxxxxxxx>:
On Tuesday 19 April 2016 06:52 AM, Greg KH wrote:
On Mon, Apr 18, 2016 at 06:11:51PM -0600, Alex Henrie wrote:
Hi,
I recently bought an MCS7715 USB-attached parallel port,[1] but there
seem to be a couple of problems using it with Linux:
1. The lp, parport, and parport_pc kernel modules are not loaded when
the device is plugged in.
2. After manually loading the kernel modules, /dev/lp0 is not deleted
when the device is unplugged.
I'm using a fully updated copy of Arch Linux, and at first I thought
it was a udev rules problem, but the systemd guys think that it's
actually a kernel bug.[2] Is this something that you could fix, or
guide me thorough fixing? I'd be happy to donate one of these devices
if you don't have one handy for debugging.
If you have a spare one I will really appreciate having one for debugging.
Sure, just tell me what address to mail it to and it's yours. I'll
send more than one if other people want to collaborate with you.
I am not much familiar with Arch-Linux. which kernel version is it having?
4.5.1-1-ARCH
Just an update:
Two patches have been submitted which should solve part of the problem.
lp needs more work. But I am afraid module autoloading will not work at
the moment or in near future. That is last in the list after parport is
fully converted to device model.
Regards
Sudip
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