From: Bjorn Helgaas <bjorn.helgaas@hp.com>
To: Adam Belay <ambx1@neo.rr.com>
Subject: [PATCH 0/9] PNP: adjust pnp_register_driver signature
Date: Thu, 2 Mar 2006 16:01:27 -0700
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Cc: linux-kernel@vger.kernel.org, Jaroslav Kysela <perex@suse.cz>,
       Matthieu Castet <castet.matthieu@free.fr>,
       Li Shaohua <shaohua.li@intel.com>, Andrew Morton <akpm@osdl.org>
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This series of patches removes the assumption that pnp_register_driver()
returns the number of devices claimed.  Returning the count is unreliable
because devices may be hot-plugged in the future.  (Many devices don't
support hot-plug, of course, but PNP in general does.)

This changes the convention to "zero for success, or a negative error
value," which matches pci_register_driver(), acpi_bus_register_driver(),
and platform_driver_register().

If drivers need to know the number of devices, they can count calls
to their .probe() methods.
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