linux-kernel - Re: [PATCH] fakephp: Allocate PCI resources before adding the device

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Date:	Tue, 25 Nov 2008 13:43:24 -0800
From:	Greg KH <greg@...ah.com>
To:	"Darrick J. Wong" <djwong@...ibm.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] fakephp: Allocate PCI resources before adding the
	device

On Tue, Nov 25, 2008 at 01:24:22PM -0800, Darrick J. Wong wrote:
> For PCI devices, pci_bus_assign_resources() must be called to set up the
> pci_device->resource array before pci_bus_add_devices() can be called, else
> attempts to load drivers results in BAR collision errors where there are none.
> This is not done in fakephp, so devices can be "unplugged" but scanning the
> parent bus won't bring the devices back due to resource unallocation.  Move the
> pci_bus_add_device-calling logic into pci_rescan_bus and preface it with a call
> to pci_bus_assign_resources so that we only have to (re)allocate resources once
> per bus where a new device is found.
> 
> Signed-off-by: Darrick J. Wong <djwong@...ibm.com>

Darrick, I am no longer the PCI maintainer, Jesse is.

Please resend this to him, and the linux-pci mailing list if you want it
to have a chance to get accepted.

thanks,

greg k-h
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