Hi, Bjorn, On Tue, Apr 2, 2013 at 4:53 AM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote: > On Mon, Apr 1, 2013 at 2:51 PM, Rafael J. Wysocki <rjw@xxxxxxx> wrote: >> On Monday, April 01, 2013 11:34:46 AM Bjorn Helgaas wrote: >>> [+cc Zheng, who added this with 71a83bd727] >>> >>> On Sat, Mar 30, 2013 at 4:38 PM, Rafael J. Wysocki <rjw@xxxxxxx> wrote: >>> > From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> >>> > >>> > The runtime PM of PCIe ports turns out to be quite fragile, as in >>> > some cases things work while in some other cases they don't and we >>> > don't seem to have a good way to determine whether or not they are >>> > going to work in advance. >>> >>> Do you have any references to problems encountered when enabling >>> runtime PM for PCIe ports? That information will be useful to anybody >>> who wants to take another crack at getting this working. >> >> Well, bug 53811 is one example and problems recently reported by >> Martin are another. Do you want me to dig deeper? > > OK, I got this one: > > https://bugzilla.kernel.org/show_bug.cgi?id=53811 > > Martin has reported a lot of problems lately, and I don't know which > are related to runtime PM for PCIe ports. I was hoping for a couple > URLs to put in the changelog so that when somebody gets the itch to > make this work, they have some useful info to start from. If you > point me at a specific message, I'll dig up an archive URL for it. > > Otherwise, I'm afraid we'll just oscillate between "enable PM, find > bug, disable PM, enable PM, find same bug, disable PM, etc..." Sorry for late! I am trying to fix a way to fix 53811 and Martin's bug without disable PM for port totally. Best Regards, Huang Ying -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
