Re: [PATCH] add transport class symlink to device object

[Greg KH <greg@kroah.com>]

On Mon, Aug 15, 2005 at 05:41:17PM -0500, James Bottomley wrote:
> On Sun, 2005-08-14 at 16:02 +0100, Matthew Wilcox wrote:
> > /sys/class/tty/ttyS0/device -> ../../../devices/parisc/0/0:0/pci0000:00/0000:00:04.0
> > /sys/class/tty/ttyS1/device -> ../../../devices/parisc/0/0:0/pci0000:00/0000:00:04.0
> > /sys/class/tty/ttyS2/device -> ../../../devices/parisc/0/0:0/pci0000:00/0000:00:04.0
> > /sys/class/tty/ttyS3/device -> ../../../devices/parisc/0/0:0/pci0000:00/0000:00:05.0
> > /sys/class/tty/ttyS4/device -> ../../../devices/parisc/0/0:0/pci0000:00/0000:00:05.0
> 
> Actually, isn't the fix to all of this to combine Greg and James'
> patches?

Yes it is.

> The Greg one fails in SCSI because we don't have unique class device
> names (by convention we use the same name as the device bus_id) and
> James' one fails for ttys because the class name isn't unique.  However,
> if the link were derived from something like
> 
> <class name>:<class device name>
> 
> Then is would be unique in both cases.

I agree.

> Unless anyone can think of any more failing cases?

I'll try this out and see if anything breaks :)

thanks,

greg k-h