Any more comments? :)

Thanks,
-Dongsheng

-----Original Message-----
From: Linuxppc-dev [mailto:linuxppc-dev-
bounces+b40534=3Dfreescale.com@lists.ozlabs.org] On Behalf Of
Dongsheng.Wang@freescale.com
Sent: Wednesday, January 08, 2014 3:13 PM
To: Rafael J. Wysocki
Cc: linuxppc-dev@lists.ozlabs.org; galak@codeaurora.org; Wood Scott-B0742=

1;

linux-pci@vger.kernel.org; bhelgaas@google.com
Subject: RE: [PATCH 2/2] fsl/pci: The new pci suspend/resume implementati=

on

=20
=20
=20

quoted

-----Original Message-----
From: Rafael J. Wysocki [mailto:rjw@rjwysocki.net]
Sent: Wednesday, January 08, 2014 4:42 AM
To: Wang Dongsheng-B40534
Cc: bhelgaas@google.com; Wood Scott-B07421; galak@codeaurora.org; Zang =

Roy-

quoted

R61911; linux-pci@vger.kernel.org; linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 2/2] fsl/pci: The new pci suspend/resume implementa=

tion

quoted

On Tuesday, January 07, 2014 04:04:08 PM Dongsheng Wang wrote:

quoted

From: Wang Dongsheng <redacted>

The new suspend/resume implementation, send pme turnoff message
in suspend, and send pme exit message in resume.

Add a PME handler, to response PME & message interrupt.

Change platform_driver->suspend/resume to syscore->suspend/resume.

Can you please first describe the problem you're trying to address?

If we do nothing in suspend/resume, some platform PCIe ip-block can't gua=

rantee

the link back to L0 state from sleep, then, when we read the EP device wi=

ll hang.

Only we send pme turnoff message in pci controller suspend, and send pme =

exit

message in resume, the link state will be normal.
=20
When we send pme turnoff message in pci controller suspend, the links wil=

l into

l2/l3
ready, then, host cannot communicate with ep device, but pci-driver will =

call

back EP
device to save them state. So we need to change platform_driver->suspend/=

resume

to
syscore->suspend/resume.
=20
Thanks,
-Dongsheng
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev
=20