Re: udev 070 not create dvb device

["Alexander E. Patrakov" <patrakov@ums.usu.ru>]

lukkinosat wrote:

>--- Kay Sievers <kay.sievers@vrfy.org> wrote: 
>  
>
>>Seems you miss the firmware for the device.
>>Just put all firmware files in /lib/firmware/.
>>    
>>
>
>Hi
>
>In /lib/firmware there is the file dvb-ttpci-01.fw and
>with udev-058 it works, but with udev > 058 nothing
>:-(
>  
>
LFS udev/hotplug setup is horribly broken wrt running handlers for 
firmware/module loading for at least three weeks since my report:

http://www.mail-archive.com/lfs-dev@linuxfromscratch.org/msg03236.html

I seriously recommend forgetting the distro that doesn't fix its current 
known bugs with known fix but instead plans (without much understanding 
of the underlying mechanisms) to remove the hotplug package. IMHO that 
would be too early before upstream provides a patchless way to do so, 
approves it in the documentation and doesn't mark it as obsolete for at 
least a month. In the meanwhile, you can fix it by rebuilding udev with 
the following instructions:

# udev-071 required because of the bug in 070 Makefile

make EXTRAS=extras/run_directory/
make EXTRAS=extras/run_directory/ install
cp ../udev-config-4.rules /etc/udev/rules.d/25-lfs.rules
echo 'ENV{UDEVD_EVENT}="1", RUN+="/sbin/udev_run_hotplugd"' >>/etc/udev/rules.d/25-lfs.rules
echo 'RUN+="/sbin/udev_run_devd"' >>/etc/udev/rules.d/25-lfs.rules
install -m644 -D docs/writing_udev_rules/index.html \
         /usr/share/doc/udev-071/index.html


The setup above is known obsolete but works. You can use a more modern 
approach for firmware loading,

make EXTRAS=extras/firmware/
make EXTRAmake EXTRAS=extras/firmware/ install
cp ../udev-config-4.rules /etc/udev/rules.d/25-lfs.rules
echo 'ACTION="add", SUBSYSTEM="firmware", ENV{FIRMWARE}="*", RUN+="/sbin/firmware_helper"' >>/etc/udev/rules.d/25-lfs.rules
install -m644 -D docs/writing_udev_rules/index.html \
         /usr/share/doc/udev-071/index.html


That will not load modules for hotplug events out of the box. See 
examples that contain the "MODALIAS" and "modprobe" words in the example 
RedHat udev rules distributed with the udev package. But that's far 
ahead of what LFS does now :)

-- 
Alexander E. Patrakov


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