From: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] powerpc: fix oops in pcibios_release_device() after pcibios_free_controller()
Date: Wed, 13 Jul 2016 10:52:05 -0300 [thread overview]
Message-ID: <57864785.1090309@linux.vnet.ibm.com> (raw)
In-Reply-To: <5785782D.3010407@linux.vnet.ibm.com>
On 07/12/2016 08:07 PM, Mauricio Faria de Oliveira wrote:
> Can you clarify which are the devices that should be tracked w/ krefs to
> the PHB?
Last night I had forgotten about the fundamental point of krefs - track
references to pointers - and this answers the question.
I'm looking at the holders of pointers to the phb struct, and it seems
I wasn't too far off w/ the child buses and devices idea -- as the root
bus (phb->bus) is assigned the phb pointer in the bus->sysdata field,
and it's inherited from parent by child buses and devices.
I'll continue here. Comments always welcome.
--
Mauricio Faria de Oliveira
IBM Linux Technology Center
prev parent reply other threads:[~2016-07-13 13:52 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-05 1:44 [PATCH] powerpc: fix oops in pcibios_release_device() after pcibios_free_controller() Mauricio Faria de Oliveira
2016-07-05 2:55 ` Benjamin Herrenschmidt
2016-07-05 13:34 ` Mauricio Faria de Oliveira
2016-07-12 23:07 ` Mauricio Faria de Oliveira
2016-07-13 13:52 ` Mauricio Faria de Oliveira [this message]
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