power: add back check for ro.vendor.extension_library

This partially reverts I0ce40bbefb8c867dda8ee5eb1f948af2106e692d,
"power: Using PerfHAL API".

Especially older systems don't provide libqti-perfd-client.so but this
is hardcoded since the aforementioned change.  Use the former code
checking for ro.vendor.extension_library and try to load that library if
the property exists before falling back to loading
libqti-perfd-client.so.

Change-Id: If89e3b88062be10af7cfd43b6ba92a22fda32754
Signed-off-by: Corinna Vinschen <xda@vinschen.de>

1 files changed, 11 insertions, 2 deletions

diff --git a/utils.c b/utils.c
index 6c769e6..db1637d 100644
--- a/utils.c
+++ b/utils.c
@@ -60,13 +60,22 @@ static struct list_node active_hint_list_head;
 const char* pkg = "QTI PowerHAL";
 
 static void* get_qcopt_handle() {
+    char qcopt_lib_path[PATH_MAX] = {0};
     void* handle = NULL;
 
     dlerror();
 
-    handle = dlopen(PERF_HAL_PATH, RTLD_NOW);
+    if (property_get("ro.vendor.extension_library", qcopt_lib_path, NULL)) {
+        handle = dlopen(qcopt_lib_path, RTLD_NOW);
+        if (!handle) {
+            ALOGE("Unable to open %s: %s\n", qcopt_lib_path, dlerror());
+        }
+    }
     if (!handle) {
-        ALOGE("Unable to open %s: %s\n", PERF_HAL_PATH, dlerror());
+        handle = dlopen(PERF_HAL_PATH, RTLD_NOW);
+        if (!handle) {
+            ALOGE("Unable to open %s: %s\n", PERF_HAL_PATH, dlerror());
+        }
     }
 
     return handle;