[RFC 3/3] PCI/PM: Disable PME poll for PCIe devices

From: Huang Ying
Date: Mon Sep 17 2012 - 04:54:55 EST


PME poll is not necessary for PCIe devices, because PCIe devices use
in-band PME message and IRQ on PCIe port to report PME.

PME poll is useful for PCI devices. Because for PCI devices, PME is
reported via a side-band PME# line and some platform logic, and the
platform logic is often missing on many systems.

Signed-off-by: Huang Ying <ying.huang@xxxxxxxxx>
---
drivers/pci/pcie/pme.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/pci/pcie/pme.c
+++ b/drivers/pci/pcie/pme.c
@@ -313,6 +313,7 @@ static int pcie_pme_set_native(struct pc

device_set_run_wake(&dev->dev, true);
dev->pme_interrupt = true;
+ dev->pme_poll = false;
return 0;
}

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/