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Message-ID: <20070420190028.GF13939@redhat.com>
Date: Fri, 20 Apr 2007 15:00:28 -0400
From: Dave Jones <davej@...hat.com>
To: Greg KH <greg@...ah.com>
Cc: "Preston A. Elder" <prez@...h.net>, linux-kernel@...r.kernel.org
Subject: Re: AGPGart / AMD K7
On Fri, Apr 20, 2007 at 11:29:52AM -0700, Greg Kroah-Hartman wrote:
> On Fri, Apr 20, 2007 at 02:20:29PM -0400, Dave Jones wrote:
> >
> > btw Greg, wtf does driver_register return a 0 as 'success' if it
> > completes the function, and 0 as 'failure' if !bus ?
> > That seems doomed to failure.
>
> I don't know why the code does that, we should always have a bus
> assigned to a driver. I'll change that and watch to see what breaks :)
Maybe this?
We should always have a bus in bus_add_driver()
Instead of returning success when we don't, BUG().
Signed-off-by: Dave Jones <davej@...hat.com>
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 253868e..3ba8f1f 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -530,8 +530,7 @@ int bus_add_driver(struct device_driver *drv)
struct bus_type * bus = get_bus(drv->bus);
int error = 0;
- if (!bus)
- return 0;
+ BUG_ON(!bus);
pr_debug("bus %s: add driver %s\n", bus->name, drv->name);
error = kobject_set_name(&drv->kobj, "%s", drv->name);
--
http://www.codemonkey.org.uk
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