Overcome disconnect during oem override

While bootup, usb gets configured when the property triggers are
run. While in oemOverride, the current configuration is persisted
in sys.usb.<bootmode>.config. Do not reconfigure the stack if the
current configuration is same as the new configuration.

Bug: 64225494
Change-Id: Id35d110bf3fa8f58d05e14941716d4ad2b196f8d

1 files changed, 3 insertions, 2 deletions

diff --git a/services/usb/java/com/android/server/usb/UsbDeviceManager.java b/services/usb/java/com/android/server/usb/UsbDeviceManager.java
index 774bf438995c..3d0536327259 100644
--- a/services/usb/java/com/android/server/usb/UsbDeviceManager.java
+++ b/services/usb/java/com/android/server/usb/UsbDeviceManager.java
@@ -434,6 +434,8 @@ public class UsbDeviceManager {
             try {
                 // Restore default functions.
 
+                mCurrentOemFunctions = SystemProperties.get(UsbDeviceManager.getPersistProp(false),
+                        UsbManager.USB_FUNCTION_NONE);
                 if (isNormalBoot()) {
                     mCurrentFunctions = SystemProperties.get(USB_CONFIG_PROPERTY,
                             UsbManager.USB_FUNCTION_NONE);
@@ -662,8 +664,7 @@ public class UsbDeviceManager {
             }
 
             if ((!functions.equals(oemFunctions) &&
-                    (mCurrentOemFunctions == null ||
-                            !mCurrentOemFunctions.equals(oemFunctions)))
+                            !mCurrentOemFunctions.equals(oemFunctions))
                     || !mCurrentFunctions.equals(functions)
                     || !mCurrentFunctionsApplied
                     || forceRestart) {