mythbuntu-bugs team mailing list archive
-
mythbuntu-bugs team
-
Mailing list archive
-
Message #04651
[Bug 778026] Re: lirc-modules-source breaks in-kernel lirc support
** Description changed:
Binary package hint: lirc-modules-source
- Ubuntu 11.04 is shipping with a 2.6.38 kernel, which has numerous lirc
- device drivers from the staging tree enabled, as well as rc-core
- infrastructure and several new rc-core device drivers. The rc-core
- drivers and the in-kernel lirc device drivers rely on the lirc device
- interface driver (lirc_dev.ko) provided by the kernel to provide the
- lirc character device interface needed by lircd.
+ ** Impact **
+ Ubuntu 11.04 is shipping with a 2.6.38 kernel, which has numerous lirc device drivers from the staging tree enabled, as well as rc-core infrastructure and several new rc-core device drivers. The rc-core drivers and the in-kernel lirc device drivers rely on the lirc device interface driver (lirc_dev.ko) provided by the kernel to provide the lirc character device interface needed by lircd.
Also shipping is an lirc-modules-source package, based on lirc 0.8.7-era
out-of-tree lirc device driver code. When this package is installed and
dkms builds modules, they override the in-kernel ones, most troubling
being lirc_dev.ko:
# find /lib/modules/$(uname -r)/ -name lirc_dev.ko
/lib/modules/2.6.38-8-generic/kernel/drivers/media/rc/lirc_dev.ko
/lib/modules/2.6.38-8-generic/updates/dkms/lirc_dev.ko
Now when any of the in-kernel lirc drivers or an rc-core driver with
support for the ir-lirc-codec bridge driver tries to load, you get
something like the following:
# modprobe ir-lirc-codec
FATAL: Error inserting ir_lirc_codec (/lib/modules/2.6.38-8-generic/kernel/drivers/media/rc/ir-lirc-codec.ko): Unknown symbol in module, or unknown parameter (see dmesg)
# dmesg | grep ir_lirc_codec
[ 13.439407] ir_lirc_codec: Unknown symbol lirc_dev_fop_poll (err 0)
[ 13.439557] ir_lirc_codec: Unknown symbol lirc_dev_fop_open (err 0)
[ 13.439622] ir_lirc_codec: disagrees about version of symbol lirc_get_pdata
[ 13.439623] ir_lirc_codec: Unknown symbol lirc_get_pdata (err -22)
[ 13.439706] ir_lirc_codec: Unknown symbol lirc_dev_fop_close (err 0)
[ 13.439770] ir_lirc_codec: Unknown symbol lirc_dev_fop_read (err 0)
[ 13.439824] ir_lirc_codec: disagrees about version of symbol lirc_register_driver
[ 13.439826] ir_lirc_codec: Unknown symbol lirc_register_driver (err -22)
[ 13.439960] ir_lirc_codec: Unknown symbol lirc_dev_fop_ioctl (err 0)
This completely breaks in-kernel drivers' lirc support.
Please either stop shipping lirc-modules-source, or properly update it
to build against the in-kernel lirc bits (and preferably, strip out the
entirely redundant drivers).
+
+ ** Addressing in future versions **
+ For oneiric and later the lirc-modules-source package has been dropped
+
+ ** Reproducing the bug **
+ 1) Install lirc-modules-source
+ 2) modprobe ir-lirc-codec
+ 3) Observe errors in dmesg
+
+ ** Regression Potential **
+ Little, although the DKMS package builds, it will not not interact properly with the kernel's built-in LIRC support. It's not possible to use right now, and this is just to prevent users from trying.
** Attachment added: "debdiff"
https://bugs.launchpad.net/ubuntu/+source/lirc/+bug/778026/+attachment/2115245/+files/debdiff
** Changed in: lirc (Ubuntu Natty)
Status: Triaged => New
** Changed in: lirc (Ubuntu Natty)
Assignee: (unassigned) => Mario Limonciello (superm1)
--
You received this bug notification because you are a member of Mythbuntu
Bug Team, which is subscribed to lirc in Ubuntu.
https://bugs.launchpad.net/bugs/778026
Title:
lirc-modules-source breaks in-kernel lirc support
Status in “lirc” package in Ubuntu:
Fix Released
Status in “lirc” source package in Natty:
New
Status in “lirc” source package in Oneiric:
Fix Released
Bug description:
Binary package hint: lirc-modules-source
** Impact **
Ubuntu 11.04 is shipping with a 2.6.38 kernel, which has numerous lirc device drivers from the staging tree enabled, as well as rc-core infrastructure and several new rc-core device drivers. The rc-core drivers and the in-kernel lirc device drivers rely on the lirc device interface driver (lirc_dev.ko) provided by the kernel to provide the lirc character device interface needed by lircd.
Also shipping is an lirc-modules-source package, based on lirc
0.8.7-era out-of-tree lirc device driver code. When this package is
installed and dkms builds modules, they override the in-kernel ones,
most troubling being lirc_dev.ko:
# find /lib/modules/$(uname -r)/ -name lirc_dev.ko
/lib/modules/2.6.38-8-generic/kernel/drivers/media/rc/lirc_dev.ko
/lib/modules/2.6.38-8-generic/updates/dkms/lirc_dev.ko
Now when any of the in-kernel lirc drivers or an rc-core driver with
support for the ir-lirc-codec bridge driver tries to load, you get
something like the following:
# modprobe ir-lirc-codec
FATAL: Error inserting ir_lirc_codec (/lib/modules/2.6.38-8-generic/kernel/drivers/media/rc/ir-lirc-codec.ko): Unknown symbol in module, or unknown parameter (see dmesg)
# dmesg | grep ir_lirc_codec
[ 13.439407] ir_lirc_codec: Unknown symbol lirc_dev_fop_poll (err 0)
[ 13.439557] ir_lirc_codec: Unknown symbol lirc_dev_fop_open (err 0)
[ 13.439622] ir_lirc_codec: disagrees about version of symbol lirc_get_pdata
[ 13.439623] ir_lirc_codec: Unknown symbol lirc_get_pdata (err -22)
[ 13.439706] ir_lirc_codec: Unknown symbol lirc_dev_fop_close (err 0)
[ 13.439770] ir_lirc_codec: Unknown symbol lirc_dev_fop_read (err 0)
[ 13.439824] ir_lirc_codec: disagrees about version of symbol lirc_register_driver
[ 13.439826] ir_lirc_codec: Unknown symbol lirc_register_driver (err -22)
[ 13.439960] ir_lirc_codec: Unknown symbol lirc_dev_fop_ioctl (err 0)
This completely breaks in-kernel drivers' lirc support.
Please either stop shipping lirc-modules-source, or properly update it
to build against the in-kernel lirc bits (and preferably, strip out
the entirely redundant drivers).
** Addressing in future versions **
For oneiric and later the lirc-modules-source package has been dropped
** Reproducing the bug **
1) Install lirc-modules-source
2) modprobe ir-lirc-codec
3) Observe errors in dmesg
** Regression Potential **
Little, although the DKMS package builds, it will not not interact properly with the kernel's built-in LIRC support. It's not possible to use right now, and this is just to prevent users from trying.
References