linux-kernel - Re: [PATCH 1/5 v3] PCI: honor child buses add

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Message-ID: <20110801115205.0f165e75@jbarnes-desktop>
Date:	Mon, 1 Aug 2011 11:52:05 -0700
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	Ram Pai <linuxram@...ibm.com>
Cc:	torvalds@...ux-foundation.org, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, yinghai@...nel.org,
	bhutchings@...arflare.com, socketcan@...tkopp.net,
	bhelgaas@...gle.com, linux@...inikbrodowski.net
Subject: Re: [PATCH 1/5 v3] PCI: honor child buses add_size in hot plug
 configuration

On Mon, 25 Jul 2011 13:08:38 -0700
Ram Pai <linuxram@...ibm.com> wrote:

> From: Yinghai Lu <yinghai@...nel.org>
> 
> git commit c8adf9a3e873eddaaec11ac410a99ef6b9656938
>     "PCI: pre-allocate additional resources to devices only after
> 	successful allocation of essential resources."
> 
> fails to take into consideration the optional-resources needed by children
> devices while calculating the optional-resource needed by the bridge.
> 
> This can be a problem on some setup. For example, if a hotplug bridge has 8
> children hotplug bridges, the bridge should have enough resources to accomodate
> the hotplug requirements for each of its children hotplug bridges.  Currently
> this is not the case.
> 
> This patch fixes the problem.

Just pulled these guys into my for-linus branch.  They should be safe
since they're behind the new =realloc param, but please test.

Thanks,
-- 
Jesse Barnes, Intel Open Source Technology Center
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