DO NOT MERGE: UsbService: Make sure the USB accessory function is disabled when we disconnect (ae0fdf13) · Commits · e / os / android_frameworks_base

services/java/com/android/server/usb/UsbService.java

+20 −29

Original line number	Diff line number	Diff line
		@@ -92,8 +92,8 @@ public class UsbService extends IUsbManager.Stub {
		private boolean mSystemReady;

		private UsbAccessory mCurrentAccessory;
		// functions to restore after exiting accessory mode
		private final ArrayList<String> mAccessoryRestoreFunctions = new ArrayList<String>();
		// USB functions that are enabled by default, to restore after exiting accessory mode
		private final ArrayList<String> mDefaultFunctions = new ArrayList<String>();

		private final Context mContext;
		private final Object mLock = new Object();
		@@ -107,20 +107,6 @@ public class UsbService extends IUsbManager.Stub {
		boolean enteringAccessoryMode =
		(mHasUsbAccessory && enabled && UsbManager.USB_FUNCTION_ACCESSORY.equals(function));

		if (enteringAccessoryMode) {
		// keep a list of functions to reenable after exiting accessory mode
		mAccessoryRestoreFunctions.clear();
		int count = mEnabledFunctions.size();
		for (int i = 0; i < count; i++) {
		String f = mEnabledFunctions.get(i);
		// RNDIS should not be restored and adb is handled automatically
		if (!UsbManager.USB_FUNCTION_RNDIS.equals(f) &&
		!UsbManager.USB_FUNCTION_ADB.equals(f) &&
		!UsbManager.USB_FUNCTION_ACCESSORY.equals(f)) {
		mAccessoryRestoreFunctions.add(f);
		}
		}
		}
		if (enabled) {
		if (!mEnabledFunctions.contains(function)) {
		mEnabledFunctions.add(function);
		@@ -246,6 +232,11 @@ public class UsbService extends IUsbManager.Stub {
		String functionName = files[i].getName();
		if (value == 1) {
		mEnabledFunctions.add(functionName);
		// adb is enabled/disabled automatically by the adbd daemon,
		// so don't treat it as a default function
		if (!UsbManager.USB_FUNCTION_ADB.equals(functionName)) {
		mDefaultFunctions.add(functionName);
		}
		} else {
		mDisabledFunctions.add(functionName);
		}
		@@ -338,29 +329,24 @@ public class UsbService extends IUsbManager.Stub {
		switch (msg.what) {
		case MSG_UPDATE_STATE:
		if (mConnected != mLastConnected \|\| mConfiguration != mLastConfiguration) {
		if (mConnected == 0 && mCurrentAccessory != null) {
		// turn off accessory mode when we are disconnected
		if (mConnected == 0) {
		// make sure accessory mode is off, and restore default functions
		if (UsbManager.setFunctionEnabled(
		UsbManager.USB_FUNCTION_ACCESSORY, false)) {
		Log.d(TAG, "exited USB accessory mode");

		// restore previously enabled functions
		for (String function : mAccessoryRestoreFunctions) {
		int count = mDefaultFunctions.size();
		for (int i = 0; i < count; i++) {
		String function = mDefaultFunctions.get(i);
		if (UsbManager.setFunctionEnabled(function, true)) {
		Log.e(TAG, "could not reenable function " + function);
		}
		}
		mAccessoryRestoreFunctions.clear();
		}

		if (mCurrentAccessory != null) {
		mDeviceManager.accessoryDetached(mCurrentAccessory);
		mCurrentAccessory = null;

		// this will cause an immediate reset of the USB bus,
		// so there is no point in sending the
		// function disabled broadcast.
		return;
		} else {
		Log.e(TAG, "could not disable USB_FUNCTION_ACCESSORY");
		}
		}

		@@ -416,6 +402,11 @@ public class UsbService extends IUsbManager.Stub {
		pw.print(mDisabledFunctions.get(i) + " ");
		}
		pw.println("");
		pw.print(" Default Functions: ");
		for (int i = 0; i < mDefaultFunctions.size(); i++) {
		pw.print(mDefaultFunctions.get(i) + " ");
		}
		pw.println("");
		pw.println(" mConnected: " + mConnected + ", mConfiguration: " + mConfiguration);
		pw.println(" mCurrentAccessory: " + mCurrentAccessory);