intel_idle: PCI quirk to prevent Lenovo Ideapad s10-3 boot hang
authorLen Brown <len.brown@intel.com>
Sat, 25 Sep 2010 01:02:27 +0000 (21:02 -0400)
committerLen Brown <len.brown@intel.com>
Sat, 25 Sep 2010 01:09:19 +0000 (21:09 -0400)
commit4731fdcf6f7bdab3e369a3f844d4ea4d4017284d
tree0073886d3be72f38143f9d1909cc4204dd64c03f
parent2422084a94fcd5038406261b331672a13c92c050
intel_idle: PCI quirk to prevent Lenovo Ideapad s10-3 boot hang

When the Lenovo Ideapad S10-3 is booted with HT enabled,
it hits a boot hang in the intel_idle driver.

This occurs when entering ATM-C4 for the first time,
unless BM_STS is first cleared.

acpi_idle doesn't see this because it first checks
and clears BM_STS, but it would hit the same hang
if that check were disabled.

http://bugs.meego.com/show_bug.cgi?id=7093
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/634702

Signed-off-by: Len Brown <len.brown@intel.com>
drivers/pci/quirks.c