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authorRafael J. Wysocki <rjw@sisk.pl>2010-11-25 02:05:17 +0300
committerLen Brown <len.brown@intel.com>2011-01-12 12:48:43 +0300
commit32a00d274e877eab3ea7ab196b75c9be5170d25e (patch)
tree0b7a515e8b2328e8cf8b22794cdf81ab19838b5d /drivers/acpi/bus.c
parent3c0eee3fe6a3a1c745379547c7e7c904aa64f6d5 (diff)
downloadlinux-32a00d274e877eab3ea7ab196b75c9be5170d25e.tar.xz
ACPI / PM: Prevent acpi_power_get_inferred_state() from making changes
acpi_power_get_inferred_state() should not update device->power.state behind the back of its caller, so make it return the state via a pointer instead. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/bus.c')
-rw-r--r--drivers/acpi/bus.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index d68bd61072bb..a9fe8e6bc40e 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -222,7 +222,8 @@ int acpi_bus_get_power(acpi_handle handle, int *state)
* indirectly (via power resources).
*/
if (device->power.flags.power_resources) {
- result = acpi_power_get_inferred_state(device);
+ result = acpi_power_get_inferred_state(device,
+ &device->power.state);
if (result)
return result;
} else if (device->power.flags.explicit_get) {