tree fe65e59d521c26d8b7c1b992613dad92ecdf0734
parent b801c8ae5b771efc40adf0f4fcef2ba9508258e0
author Tatenda Chipeperekwa <tatendac@codeaurora.org> 1414626439 -0700
committer Gerrit - the friendly Code Review server <code-review@localhost> 1415165314 -0800

sf: Add a NULL check in getDisplayConfigs

Validate the display binder by adding a NULL check in getDisplayConfigs.
This will prevent a false match if the caller queries the display
configs for an inactive display (whose binder is NULL by default).

Without this change we might end up attempting to index the display
config array, which is unpopulated for inactive displays, and this will
result in a crash. (See getDisplayInfo in SurfaceComposerClient.cpp for
an example of this scenario)

Change-Id: I1a12f43b7c375b9c01998dadd5b658275c733fb2