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Reduce failure uncertainty 

This adds a trivial workaround for a one-shot boot time crash, plus
an explicit check and abort for a failure condition that currently
presents as a less obvious failure.

Bug: 7145521, 7147557
Change-Id: I548f6a9caa9f0bd5710aaecea0e1c6c7c8f2f281
This commit is contained in:
Andy McFadden 2012-09-11 15:15:13 -07:00
parent b0d1dd36f1
commit 43601a2dc3
2 changed files with 13 additions and 0 deletions
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6
services/surfaceflinger/DisplayHardware/HWComposer.cpp
View File

@ -111,6 +111,12 @@ HWComposer::HWComposer(
loadFbHalModule();
loadHwcModule();
if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1) && !mFbDev) {
ALOGE("ERROR: failed to open framebuffer, aborting");
// FB mandatory on <= 1.0, give up
abort();
}
if (mHwc) {
ALOGI("Using %s version %u.%u", HWC_HARDWARE_COMPOSER,
(hwcApiVersion(mHwc) >> 24) & 0xff,

7
services/surfaceflinger/SurfaceFlinger.cpp
View File

@ -618,6 +618,13 @@ bool SurfaceFlinger::threadLoop() {
}
void SurfaceFlinger::onVSyncReceived(int type, nsecs_t timestamp) {
if (mEventThread == NULL) {
// This is a temporary workaround for b/7145521. A non-null pointer
// does not mean EventThread has finished initializing, so this
// is not a correct fix.
ALOGW("WARNING: EventThread not started, ignoring vsync");
return;
}
if (uint32_t(type) < DisplayDevice::NUM_DISPLAY_TYPES) {
// we should only receive DisplayDevice::DisplayType from the vsync callback
const wp<IBinder>& token(mDefaultDisplays[type]);