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From: Greg KH <greg@kroah.com>
To: linux-hotplug@vger.kernel.org
Subject: Re: devices with more than one node
Date: Tue, 13 Jan 2004 19:46:31 +0000	[thread overview]
Message-ID: <20040113194631.GA3818@kroah.com> (raw)
In-Reply-To: <20040113193842.GA29887@suse.de>

On Tue, Jan 13, 2004 at 08:38:42PM +0100, Olaf Hering wrote:
> 
> How is udev supposed to handle devices with more than one node?

udev will get a hotplug event for every node that is created in sysfs.

> scsi devices have a block and chardev,

More on scsi in a minute...

> inputdevices have also an event node attached.

Yes, and you get two different hotplug events, and udev just works,
right?  (this is with the kernel patches I sent out last week...)

> Maybe I miss the obvious, but how do I match scsi as example? Not that
> sg provides a sg 'dev' entry today, but an external PROGRAM could not
> provide an relative symlink to sgN.

scsi needs to create a scsi_generic class (or some such name) and have
it contain the sg information.  It should not be in the cdev directory
like it currently is (that's badly broken and should have never made it
in...)  That sg class can contain the symlink back to the device that it
is associated with.

Does this help?

thanks,

greg k-h


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  reply	other threads:[~2004-01-13 19:46 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-01-13 19:38 devices with more than one node Olaf Hering
2004-01-13 19:46 ` Greg KH [this message]
2004-01-13 21:11 ` Olaf Hering
2004-01-13 21:20 ` Greg KH
2004-01-13 23:01   ` Patrick Mansfield
2004-01-13 23:18     ` Greg KH
2004-01-14  1:12       ` dougg
2004-01-14  1:26         ` Greg KH
2004-01-14 17:29 ` Olaf Hering
2004-01-14 17:39 ` Greg KH
2004-01-14 17:44 ` Greg KH
2004-01-14 19:15 ` Olaf Hering
2004-01-14 21:32 ` Greg KH
2004-01-14 21:35 ` Greg KH
2004-01-15  8:01 ` Vojtech Pavlik
2004-01-15  9:04 ` Olaf Hering
2004-01-15  9:19 ` Vojtech Pavlik
2004-01-15 21:18 ` Greg KH

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