ion: add alignment check to chunk heap

Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/android/ion/ion_chunk_heap.c

@@ -47,6 +47,9 @@ static int ion_chunk_heap_allocate(struct ion_heap *heap,
 	unsigned long num_chunks;
 	unsigned long allocated_size;
 
+	if (align > chunk_heap->chunk_size)
+		return -EINVAL;
+
 	allocated_size = ALIGN(size, chunk_heap->chunk_size);
 	num_chunks = allocated_size / chunk_heap->chunk_size;