Public bug reported:
/lib/udev/hplj1000 doesn't handle another $DEVNAME case when udev calls
it twice.
Udev calls the script twice for some reason on the system described
below.
At first, udev calls hplj1000 with "/dev/bus/usb/004/059" as a $DEVNAME which
is not desired/not supported.
Then it calls the script once again with "/dev/usb/lp0" as a $DEVNAME which is
desired and must be used to load a firmware to.
The problem is that the script handles only "/dev/usb/usb*" case but not the
"/dev/bus/usb/*".
This leads to firmware being loaded twice which causes HP LaserJet 1000 to hang
and stop processing tasks.
Attached patch adds another case to the /lib/udev/hplj1000 script that
silently exits if the script is called with undesired value.
# lsb_release -rd
Description: Ubuntu 14.04.2 LTS
Release: 14.04
# apt-cache policy printer-driver-foo2zjs-common
printer-driver-foo2zjs-common:
Installed: 20140209dfsg0-1ubuntu1
Candidate: 20140209dfsg0-1ubuntu1
Version table:
*** 20140209dfsg0-1ubuntu1 0
500 http://archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
100 /var/lib/dpkg/status
# apt-cache policy udev
udev:
Installed: 204-5ubuntu20.12
Candidate: 204-5ubuntu20.12
Version table:
*** 204-5ubuntu20.12 0
500 http://archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
100 /var/lib/dpkg/status
204-5ubuntu20 0
500 http://archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
#
** Affects: foo2zjs (Ubuntu)
Importance: Undecided
Status: New
** Tags: foo2zjs hplj1000 udev
** Patch added: "hplj1000.patch"
https://bugs.launchpad.net/bugs/1476844/+attachment/4432206/+files/hplj1000.patch
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https://bugs.launchpad.net/bugs/1476844
Title:
loading firmware into hplj1000 twice
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