commit 8e70791ff732ce244077310bdfdaf75dc19baabc
author David Gross <dgross@google.com> Mon Jun 06 16:15:00 2016 -0700
committer David Gross <dgross@google.com> Mon Jun 06 16:15:00 2016 -0700
tree fc5528884e4315107f795eecfd8faa6022fec933
parent bb0a08cc28a83c86ca90954633885d318045a20a

Add HAL version check, with fallback to CPU reference driver on failure.

libRS_internal and the vendor driver (or CPU reference driver) must
agree on HAL version.

Bug: 27298560
Change-Id: Ie4886af9c9cf6a91a164b8cfedb5c010ffbf9cb0

rsDriverLoader.cpp

diff --git a/rsDriverLoader.cpp b/rsDriverLoader.cpp
index 426c519..83c6cf6 100644
--- a/rsDriverLoader.cpp
+++ b/rsDriverLoader.cpp
@@ -201,6 +201,12 @@
         goto error;
     }
 
+    if (version_major != RS_HAL_VERSION) {
+        ALOGE("Mismatched RS HAL versions: %s is version %u but version %u is expected",
+              filename, version_major, RS_HAL_VERSION);
+        goto error;
+    }
+
     if (!LoadHalTable(this, fnQueryHal, mIsGraphicsContext)) {
         ALOGE("Error loading RS HAL table, %s", filename);
         goto error;