shpchp: check firmware before taking control
commitac9c052d10d8d6f46a30cb46c0d6d753997c299f
authorKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Wed, 28 May 2008 06:01:03 +0000 (28 15:01 +0900)
committerJesse Barnes <jbarnes@virtuousgeek.org>
Tue, 10 Jun 2008 17:59:53 +0000 (10 10:59 -0700)
tree15c252f9a0addcc944aa7e453bf68b174dfc38fe
parentd737bdc141f0f040171fffbb7f9e08a825b27aab
shpchp: check firmware before taking control

Fix the following problems of shpchp driver about getting hotplug
control from firmware.

  - The shpchp driver must not control the hotplug controller if it
    fails to get control from the firmware. But current shpchp
    controls the hotplug controller regardless the result, because it
    doesn't check the return value of get_hp_hw_control_from_firmware().

  - Current shpchp driver doesn't support _OSC.

The pciehp driver already have the code for evaluating _OSC and OSHP
and shpchp and pciehp can share it. So this patch move that code from
pciehp to acpi_pcihp.c.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
drivers/pci/hotplug/acpi_pcihp.c
drivers/pci/hotplug/pciehp.h
drivers/pci/hotplug/pciehp_hpc.c
drivers/pci/hotplug/shpchp.h
drivers/pci/hotplug/shpchp_core.c
drivers/pci/hotplug/shpchp_hpc.c
include/linux/pci_hotplug.h