ion: add alignment check to carveout heap

Change-Id: I25c752b3eacb48cccea5be2df319634b3affd331
Signed-off-by: Colin Cross <ccross@android.com>

diff --git a/drivers/staging/android/ion/ion_carveout_heap.c b/drivers/staging/android/ion/ion_carveout_heap.c
index ed2b7ae709644b82569266218165aba2e4b8e04b..128ee115e60e8a4d63e1d0899394953e776434b6 100644 (file)
--- a/drivers/staging/android/ion/ion_carveout_heap.c
+++ b/drivers/staging/android/ion/ion_carveout_heap.c
@@ -70,6 +70,9 @@ static int ion_carveout_heap_allocate(struct ion_heap *heap,
                                      unsigned long size, unsigned long align,
                                      unsigned long flags)
 {
+       if (align > PAGE_SIZE)
+               return -EINVAL;
+
        buffer->priv_phys = ion_carveout_allocate(heap, size, align);
        return buffer->priv_phys == ION_CARVEOUT_ALLOCATE_FAIL ? -ENOMEM : 0;
 }