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[PATCH] pnp: PNP: adjust pnp_register_driver signature

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Remove 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.

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().

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>
This commit is contained in:
Bjorn Helgaas
2006-03-27 01:17:08 -08:00
committed by Linus Torvalds
parent 070c699983
commit 982c609448
3 changed files with 11 additions and 27 deletions
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19
drivers/pnp/driver.c
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@ -201,31 +201,14 @@ struct bus_type pnp_bus_type = {
.resume = pnp_bus_resume,
};
static int count_devices(struct device * dev, void * c)
{
int * count = c;
(*count)++;
return 0;
}
int pnp_register_driver(struct pnp_driver *drv)
{
int count;
pnp_dbg("the driver '%s' has been registered", drv->name);
drv->driver.name = drv->name;
drv->driver.bus = &pnp_bus_type;
count = driver_register(&drv->driver);
/* get the number of initial matches */
if (count >= 0){
count = 0;
driver_for_each_device(&drv->driver, NULL, &count, count_devices);
}
return count;
return driver_register(&drv->driver);
}
void pnp_unregister_driver(struct pnp_driver *drv)