From: Colin Cross <ccross@android.com>
Date: Sat, 14 Dec 2013 03:26:20 +0000 (-0800)
Subject: ion: add alignment check to carveout heap
X-Git-Tag: firefly_0821_release~176^2~4489^2~385
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f0f06763820e5b5f6e13afa814e68e8f4d955c45;p=firefly-linux-kernel-4.4.55.git

ion: add alignment check to carveout 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>
---

diff --git a/drivers/staging/android/ion/ion_carveout_heap.c b/drivers/staging/android/ion/ion_carveout_heap.c
index 1d53e9120b90..b0b08c30f6f0 100644
--- 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;
 }