[U-Boot] [PATCH 2/2] pci: Change the first CFG read to Vendor ID in enumeration

[Z.q. Hou <zhiqiang.hou@nxp.com>]

Hi Simon and Bin,

Do I need to send the standalone patch 1/2 in version 2?

Thanks,
Zhiqiang

> -----Original Message-----
> From: sjg at google.com <sjg@google.com> On Behalf Of Simon Glass
> Sent: 2018年10月9日 11:41
> To: Bin Meng <bmeng.cn@gmail.com>
> Cc: Z.q. Hou <zhiqiang.hou@nxp.com>; U-Boot Mailing List
> <u-boot@lists.denx.de>; Christian Gmeiner <christian.gmeiner@gmail.com>;
> Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>; Bernhard Messerklinger
> <bernhard.messerklinger@br-automation.com>; Masahiro Yamada
> <yamada.masahiro@socionext.com>; Mingkai Hu <mingkai.hu@nxp.com>;
> M.h. Lian <minghuan.lian@nxp.com>
> Subject: Re: [PATCH 2/2] pci: Change the first CFG read to Vendor ID in
> enumeration
> 
> Hi Bin,
> 
> On 8 October 2018 at 02:54, Bin Meng <bmeng.cn@gmail.com> wrote:
> > On Mon, Oct 8, 2018 at 4:36 PM Zhiqiang Hou <Zhiqiang.Hou@nxp.com>
> wrote:
> >>
> >> From: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
> >>
> >> As the PCIe specification recommend reading the Vendor ID register to
> >> determine if a Function is present, read the Vendor ID of a
> >> non-existent Function must not result in system error, so we'd better
> >> make the first CFG read to Vendor ID instead of Header Type register
> >> in the PCIe enumeration.
> >>
> >> Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
> >> ---
> >>  drivers/pci/pci.c | 4 ++--
> >>  1 file changed, 2 insertions(+), 2 deletions(-)
> >>
> >
> > Simon, do we need fix the non-DM version or adding new "capability" to
> > the non-DM drivers? I guess the answer is no and we should set some
> > deadline for PCI DM conversion too?
> 
> We should not fix or add new features to non-DM PCI. No one should be using
> it at this point.
> 
> I agree about the deadline. Do you want to send a patch?
> 
> Regards,
> Simon