From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jesse Barnes Subject: Re: PCI VPD size Date: Fri, 24 Oct 2008 14:18:38 -0700 Message-ID: <200810241418.38733.jbarnes@virtuousgeek.org> References: <20081024125035.4ebad408@extreme> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Cc: "Benjamin Li" , netdev@vger.kernel.org, linux-pci@vger.kernel.org To: Stephen Hemminger Return-path: In-Reply-To: <20081024125035.4ebad408@extreme> Content-Disposition: inline Sender: linux-pci-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Friday, October 24, 2008 12:50 pm Stephen Hemminger wrote: > Why did you choose to limit VPD access by using PCI quirks: > > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h >=99cb233d60cbe644203f19938c729ea2bb004d70 > > Rather than controlling size in the device driver which is what my > patches (which seem to have been ignored) did: > http://marc.info/?l=linux-netdev&m=122393195716363&w=2 > > The problem with the quirk scheme is that it means putting more > per device settings in a location farther away in the source code > than the underlying device driver. The last status I received on that was a comment from Jeff about assuming the maximum size for the VPD space. That's the whole reason we have the quirks: on many devices accessing beyond the end of VPD space can cause a device hang. And since that space is available from a sysfs file we need to be extra careful. Other than that, your patches looked fine, I was just waiting for you to address that last comment. -- Jesse Barnes, Intel Open Source Technology Center