RE: Loading drivers via kldload

Please see below.
-david S.

-----Original Message-----
From: Andriy Gapon [mailto:avg@FreeBSD.org]
Sent: Tuesday, August 16, 2011 9:26 AM
To: John Baldwin
Cc: David Somayajulu; freebsd-current@freebsd.org
Subject: Re: Loading drivers via kldload

The following are pure speculations, I'd rather let David speak, but just i=
n case;

on 16/08/2011 18:45 John Baldwin said the following:
> Well, that would seem odd, still.  It only returns BUS_PROBE_GENERIC (not=
 0), so
> David's driver's probe routine should still be called to get a chance to =
attach to
> the device.

Maybe it doesn't do that exactly because device and vendor ID are zeroes as=
 David
described earlier.
[David S.] The vendor and device IDs are NOT zeros. They are valid numbers.=
 The SubSystem Vendor and Device IDs are zeros.

> Also, the ATA driver only allocates its BAR once, so it shouldn't
> trigger the panic in question in that case (the panic is only triggered w=
hen you
> try to double-allocate a BAR).

This makes only if the BAR has sane values.  Not sure what happens if the B=
AR has
some junk that duplicates other PCI device, or something like that.

--
Andriy Gapon

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