Input: fix reader wakeup conditions in mousedev, joydev and tsdev

       (we want readers to wake up when underlying device is gone
        so they would get -ENODEV and close the device).
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/joydev.c

@@ -232,8 +232,10 @@ static ssize_t joydev_read(struct file *file, char __user *buf, size_t count, lo
 		&& list->head == list->tail && (file->f_flags & O_NONBLOCK))
 			return -EAGAIN;
 
-	retval = wait_event_interruptible(list->joydev->wait, list->joydev->exist
-		&& (list->startup < joydev->nabs + joydev->nkey || list->head != list->tail));
+	retval = wait_event_interruptible(list->joydev->wait,
+		 			  !list->joydev->exist ||
+					  list->startup < joydev->nabs + joydev->nkey ||
+					  list->head != list->tail);
 
 	if (retval)
 		return retval;

drivers/input/mousedev.c

@@ -524,11 +524,15 @@ static ssize_t mousedev_read(struct file * file, char __user * buffer, size_t co
 	if (!list->ready && !list->buffer && (file->f_flags & O_NONBLOCK))
 		return -EAGAIN;
 
-	retval = wait_event_interruptible(list->mousedev->wait, list->ready || list->buffer);
+	retval = wait_event_interruptible(list->mousedev->wait,
+					  !list->mousedev->exist || list->ready || list->buffer);
 
 	if (retval)
 		return retval;
 
+	if (!list->mousedev->exist)
+		return -ENODEV;
+
 	if (!list->buffer && list->ready) {
 		mousedev_packet(list, list->ps2);
 		list->buffer = list->bufsiz;

drivers/input/tsdev.c

@@ -210,7 +210,7 @@ static ssize_t tsdev_read(struct file *file, char __user *buffer, size_t count,
 		return -EAGAIN;
 
 	retval = wait_event_interruptible(list->tsdev->wait,
-		(list->head != list->tail) && list->tsdev->exist);
+			list->head != list->tail || !list->tsdev->exist);
 
 	if (retval)
 		return retval;