Messages in this thread | | | Date | Thu, 23 Dec 2010 12:54:35 -0800 | From | Jesse Barnes <> | Subject | Re: [PATCH] PCI / PCIe: Clear Root PME Status bits early during system resume |
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On Sun, 19 Dec 2010 15:57:16 +0100 "Rafael J. Wysocki" <rjw@sisk.pl> wrote:
> From: Rafael J. Wysocki <rjw@sisk.pl> > > I noticed that PCI Express PMEs don't work on my Toshiba Portege R500 > after the system has been woken up from a sleep state by a PME > (through Wake-on-LAN). After some investigation it turned out that > the BIOS didn't clear the Root PME Status bit in the root port that > received the wakeup PME and since the Requester ID was also set in > the port's Root Status register, any subsequent PMEs didn't trigger > interrupts. > > This problem can be avoided by clearing the Root PME Status bits in > all PCI Express root ports during early resume. For this purpose, > add an early resume routine to the PCIe port driver and make this > driver be always registered, even if pci_ports_disable is set (in > which case the driver's only function is to provide the early > resume callback). > > Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> > --- >
Applied to my linux-next branch, thanks.
-- Jesse Barnes, Intel Open Source Technology Center
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