On Tue, May 24, 2016 at 03:53:23PM +0300, Mika Westerberg wrote: > > I dropped "ACPI / hotplug / PCI: Runtime resume bridge before rescan" > > on the assumption that "PCI: Power on bridges before scanning new > > devices" is sufficient to cover both the ACPI and the generic PCi > > rescan cases, but I'd like some reassurance about that. > > I agree with your reasoning that the patch should not be needed anymore. > However, I have the machine which needed that patch at home so I'm not > able to test it now. I'll do that later today when I get back home. I tried now on my Lenovo Yoga 900 laptop and unfortunately "PCI: Power on bridges before scanning new devices" seems not to be enough. This machine has SD-card reader connected to one PCIe port and once I unload the sdhci-pci driver and enable runtime PM for the device, next system suspend/resume cycle loses the SD-card reader PCI device. I will investigate more tomorrow -- it is getting late here. Anyway, maybe it is safer to postpone this series for v4.8 to give it more testing time in -next. -- 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
