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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.
This patch:
Remove the assumption that pnp_register_driver() returns the number of devices
claimed.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Adam Belay <ambx1@neo.rr.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
f301ae6a69