From: Greg KH <gregkh@suse.de>
Date: Wed, 6 Feb 2008 23:20:30 -0800

quoted text
> It's odd that the original one didn't also do that,

In the old code it would vector through part_sysfs_ops (look at how it
works before the changeset), which returns 0 if the attribute lacked a
->show method.

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