https://github.com/torvalds/linux
Revision de7d5f729c72638f41d7c17487bccb1c570ff144 authored by Rafael J. Wysocki on 30 March 2013, 22:38:02 UTC, committed by Bjorn Helgaas on 03 April 2013, 21:54:59 UTC
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.

For this reason, avoid enabling runtime PM for PCIe ports by
keeping their runtime PM reference counters always above 0 for the
time being.

When a PCIe port is suspended, it can no longer report events like
hotplug, so hotplug below the port may not work, as in the bug
report below.

[bhelgaas: changelog, stable]
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=53811
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org	# v3.6+
1 parent 24ad0ef
History
Tip revision: de7d5f729c72638f41d7c17487bccb1c570ff144 authored by Rafael J. Wysocki on 30 March 2013, 22:38:02 UTC
PCI/PM: Disable runtime PM of PCIe ports
Tip revision: de7d5f7
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