Re: udev or kernel broken with rsdl 0.30 patch

[Kay Sievers <kay.sievers@vrfy.org>]

On Fri, 2007-03-16 at 14:35 +0100, Andreas Jellinghaus wrote:
> Am Freitag, 16. März 2007 13:48 schrieb Kay Sievers:
> > > what exactly is "wait_for_sysfs"? I'm asking because it shows up in the
> > > udevd log right before openct is started / should be started. I thought
> > > it would take care of problems like this? or does it only check the
> > > basedir, and not the subdirs / files in the dirs to be present or
> > > something like that?
> >
> > It waits for what you ask it to wait for. This may work:
> >   SUBSYSTEM="usb", KERNEL="[0-9]*:*", WAIT_FOR_SYSFS="bInterfaceProtocol"
> 
> I tried it like this:
> BUS!="usb", ACTION!="add", GOTO="openct_usb_rules_end"

What do you mean here? You only skip the rules if it's !usb _and_ !add.
So any other subsystem will enter here. It should probably be:
  ACTION=!"add", GOTO="openct_usb_rules_end"
  SUBSYSTEM=!"usb", GOTO="openct_usb_rules_end"

And don't use BUS=, it will search all devices in the devpath, but you
need only want to see real usb-device events, not other classes of
devices that are childs of any usb-device.

> KERNEL="[0-9]*:*", WAIT_FOR_SYSFS="bInterfaceClass"
> KERNEL="[0-9]*:*", WAIT_FOR_SYSFS="bInterfaceSubClass"
> KERNEL="[0-9]*:*", WAIT_FOR_SYSFS="bInterfaceProtocol"

You only need bInterfaceProtocol, it's the last file created by the
kernel.

> SYSFS{bInterfaceClass}="0b", SYSFS{bInterfaceSubClass}="00", 
> SYSFS{bInterfaceProtocol}="00" RUN+="/lib/udev/openct_usb"
> 
> LABEL="openct_usb_rules_end"
> 
> i.e. with extra lines in the config file. is that correct? now I have a 50/50
> chance that openct_usb run (I plugged in&out 15 times for testing).
> and I get lots of warnings during boot because some usb hardware
> doesn't have these attributes. is there a way to restrict them to 
> everything that has a usb device file?

It's probably because you match all sorts of devices which aren't usb.

Kay


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