Add HWC_ERROR define to hwcomposer specification
Change-Id: I5feb85626ab356f88874616f0cf475022a91fc27
diff --git a/include/hardware/hwcomposer.h b/include/hardware/hwcomposer.h
index 7eca7c1..9eb1aaf 100644
--- a/include/hardware/hwcomposer.h
+++ b/include/hardware/hwcomposer.h
@@ -481,6 +481,7 @@
struct hw_module_t common;
} hwc_module_t;
+#define HWC_ERROR (-1)
typedef struct hwc_composer_device_1 {
/**
* Common methods of the hardware composer device. This *must* be the first member of
@@ -714,9 +715,9 @@
* (*getActiveConfig)() returns the index of the configuration that is
* currently active on the connected display. The index is relative to
* the list of configuration handles returned by getDisplayConfigs. If there
- * is no active configuration, -1 shall be returned.
+ * is no active configuration, HWC_ERROR shall be returned.
*
- * Returns the configuration index on success or -1 on error.
+ * Returns the configuration index on success or HWC_ERROR on error.
*
* This field is REQUIRED for HWC_DEVICE_API_VERSION_1_4 and later.
* It shall be NULL for previous versions.