linux/drivers/pci/pcie
Matthew Garrett ea5f9fc589 PCI: Default PCIe ASPM control to on and require !EMBEDDED to disable
The CONFIG_PCIEASPM option is confusing and potentially dangerous. ASPM is
a hardware mediated feature rather than one under direct OS control, and
even if the config option is disabled the system firmware may have turned
on ASPM on various bits of hardware. This can cause problems later -
various hardware that claims to support ASPM does a poor job of it and may
hang or cause other difficulties. The kernel is able to recognise this in
many cases and disable the ASPM functionality, but only if CONFIG_PCIEASPM
is enabled.

Given that in its default configuration this option will either leave the
hardware as it was originally or disable hardware functionality that may
cause problems, it should by default y. The only reason to disable it
ought to be to reduce code size, so make it dependent on CONFIG_EMBEDDED.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Cc: lrodriguez@atheros.com
Cc: maximlevitsky@gmail.com
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-07-30 09:29:34 -07:00
..
aer PCI aerdrv: fix annoying warnings 2010-07-30 09:29:10 -07:00
pme PCI/PM: Do not use native PCIe PME by default 2010-06-18 09:36:37 -07:00
aspm.c PCI: Don't enable aspm before drivers have had a chance to veto it 2010-07-30 09:29:15 -07:00
Kconfig PCI: Default PCIe ASPM control to on and require !EMBEDDED to disable 2010-07-30 09:29:34 -07:00
Makefile
portdrv_bus.c
portdrv_core.c PM: Allow PCI devices to suspend/resume asynchronously 2010-02-26 20:39:12 +01:00
portdrv_pci.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
portdrv.h PCI PM: Make it possible to force using INTx for PCIe PME signaling 2010-02-22 16:20:39 -08:00