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authorKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>2008-05-15 15:21:16 +0900
committerJesse Barnes <jbarnes@virtuousgeek.org>2008-06-10 10:59:48 -0700
commit681f7d9db58d2b6dc3c3b784d6815f86a53b6ba0 (patch)
tree78bfb611f150d6843892f91a3f074dea2c59ac93 /drivers/pci/pci-acpi.c
parent5e0b9947452c824d66fafe728a46312cff544a7f (diff)
pci-acpi: add flag to indicate query had been done
Current pci-acpi implementation checks osc_data->support_stat to see if control bits had been already queried. It is not good from the viewpoint of easy understanding. So this patch adds new 'is_queried' flag to indicate query had been done. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Acked-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/pci-acpi.c')
-rw-r--r--drivers/pci/pci-acpi.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index b1bd6e6155a3..951021838055 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -23,6 +23,7 @@ struct acpi_osc_data {
acpi_handle handle;
u32 support_set;
u32 control_set;
+ int is_queried;
u32 query_result;
struct list_head sibiling;
};
@@ -147,6 +148,7 @@ static acpi_status acpi_query_osc(acpi_handle handle,
if (ACPI_SUCCESS(status)) {
osc_data->support_set = support_set;
osc_data->query_result = osc_args.query_result;
+ osc_data->is_queried = 1;
}
return status;
@@ -203,7 +205,7 @@ acpi_status pci_osc_control_set(acpi_handle handle, u32 flags)
if (!ctrlset)
return AE_TYPE;
- if (osc_data->support_set &&
+ if (osc_data->is_queried &&
((osc_data->query_result & ctrlset) != ctrlset))
return AE_SUPPORT;