tequilaOS/platform_hardware_libhardware
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clarify set failure due to power down

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- some properties can have separate propety control power state
  and setting such property when it is powered off should
  lead into returning error from hal. Define -ESHUTDOWN as
  error code to use in such case.

bug: 28385609
Change-Id: I41c1519ad00b43a83f3aa4e5f0627d75d87a960b
This commit is contained in:
Keun-young Park 2016-04-25 18:10:45 -07:00
parent f1ccec1dd1
commit f7097585dc
1 changed files with 2 additions and 0 deletions
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include/hardware/vehicle.h
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@ -1700,6 +1700,8 @@ typedef struct vehicle_hw_device {
* Setting some properties require having initial state available. Depending on the vehicle hal, * Setting some properties require having initial state available. Depending on the vehicle hal,
* such initial data may not be available for short time after init. In such case, set call * such initial data may not be available for short time after init. In such case, set call
* can return -EAGAIN like get call. * can return -EAGAIN like get call.
* For a property with separate power control, set can fail if the property is not powered on.
* In such case, hal should return -ESHUTDOWN error.
*/ */
int (*set)(struct vehicle_hw_device* device, const vehicle_prop_value_t *data); int (*set)(struct vehicle_hw_device* device, const vehicle_prop_value_t *data);