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authorKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>2009-11-04 05:59:55 +0200
committerJesse Barnes <jbarnes@virtuousgeek.org>2009-11-06 14:13:32 -0800
commit9b536e0b6164d8875b4a5bb66cc102dcf0badeba (patch)
tree508affb3c4e5e1193cdcf4c954f0e1219ea8175d
parente0cd5160346f5b88fe536f529066f102518f8acd (diff)
PCI hotplug: fix oshp evaluation
If firmware doesn't grant over native hotplug control through ACPI _OSC method, we must not evaluate OSHP. Acked-by: Andrew Patterson <andrew.patterson@hp.com> Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
-rw-r--r--drivers/pci/hotplug/acpi_pcihp.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/pci/hotplug/acpi_pcihp.c b/drivers/pci/hotplug/acpi_pcihp.c
index a73028ec52e..6833d7bdbbf 100644
--- a/drivers/pci/hotplug/acpi_pcihp.c
+++ b/drivers/pci/hotplug/acpi_pcihp.c
@@ -362,6 +362,8 @@ int acpi_get_hp_hw_control_from_firmware(struct pci_dev *pdev, u32 flags)
status = acpi_pci_osc_control_set(handle, flags);
if (ACPI_SUCCESS(status))
goto got_one;
+ if (status == AE_SUPPORT)
+ goto no_control;
kfree(string.pointer);
string = (struct acpi_buffer){ ACPI_ALLOCATE_BUFFER, NULL };
}
@@ -394,10 +396,9 @@ int acpi_get_hp_hw_control_from_firmware(struct pci_dev *pdev, u32 flags)
if (ACPI_FAILURE(status))
break;
}
-
+no_control:
dbg("Cannot get control of hotplug hardware for pci %s\n",
pci_name(pdev));
-
kfree(string.pointer);
return -ENODEV;
got_one: