diff options
| author | Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> | 2008-05-28 15:01:03 +0900 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2008-06-10 10:59:53 -0700 |
| commit | ac9c052d10d8d6f46a30cb46c0d6d753997c299f (patch) | |
| tree | 15c252f9a0addcc944aa7e453bf68b174dfc38fe /drivers/pci/hotplug/shpchp_core.c | |
| parent | d737bdc141f0f040171fffbb7f9e08a825b27aab (diff) | |
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>
Diffstat (limited to 'drivers/pci/hotplug/shpchp_core.c')
| -rw-r--r-- | drivers/pci/hotplug/shpchp_core.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/pci/hotplug/shpchp_core.c b/drivers/pci/hotplug/shpchp_core.c index 0066b0be0928..df41ecc4e7fc 100644 --- a/drivers/pci/hotplug/shpchp_core.c +++ b/drivers/pci/hotplug/shpchp_core.c @@ -330,13 +330,14 @@ static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_sp static int is_shpc_capable(struct pci_dev *dev) { - if ((dev->vendor == PCI_VENDOR_ID_AMD) || (dev->device == - PCI_DEVICE_ID_AMD_GOLAM_7450)) - return 1; - if (pci_find_capability(dev, PCI_CAP_ID_SHPC)) - return 1; - - return 0; + if ((dev->vendor == PCI_VENDOR_ID_AMD) || (dev->device == + PCI_DEVICE_ID_AMD_GOLAM_7450)) + return 1; + if (!pci_find_capability(dev, PCI_CAP_ID_SHPC)) + return 0; + if (get_hp_hw_control_from_firmware(dev)) + return 0; + return 1; } static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |