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Recover immediately from driver hang

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A firmware crash can now put the interface down without notifiying the framework.
We detect this and recover immediately.

Bug: 6263857
Change-Id: Ib2dc0412fcdf9ce7b90a7fc0fab778f7af9c0513
This commit is contained in:
Irfan Sheriff
2012-04-27 13:34:07 -07:00
parent e2639d782e
commit b678320cfa
1 changed files with 4 additions and 4 deletions
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8
wifi/java/android/net/wifi/WifiStateMachine.java
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@ -2814,15 +2814,15 @@ public class WifiStateMachine extends StateMachine {
break;
case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT:
SupplicantState state = handleSupplicantStateChange(message);
// Due to a WEXT bug, during the time of driver start/stop
// we can go into a driver stopped state in an unexpected way.
// The sequence eventually puts interface
// up and we should be back to a connected state
// A driver/firmware hang can now put the interface in a down state.
// We detect the interface going down and recover from it
if (!SupplicantState.isDriverActive(state)) {
if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) {
handleNetworkDisconnect();
}
log("Detected an interface down, restart driver");
transitionTo(mDriverStoppedState);
sendMessage(CMD_START_DRIVER);
break;
}