linux-kernel - [PATCH 100/115] ion: add alignment check to carveout heap

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Message-Id: <1386991595-6251-8-git-send-email-john.stultz@linaro.org>
Date:	Fri, 13 Dec 2013 19:26:20 -0800
From:	John Stultz <john.stultz@...aro.org>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Greg KH <gregkh@...uxfoundation.org>,
	Android Kernel Team <kernel-team@...roid.com>,
	Sumit Semwal <sumit.semwal@...aro.org>,
	Jesse Barker <jesse.barker@....com>,
	Colin Cross <ccross@...roid.com>,
	John Stultz <john.stultz@...aro.org>
Subject: [PATCH 100/115] ion: add alignment check to carveout heap

From: Colin Cross <ccross@...roid.com>

Signed-off-by: Colin Cross <ccross@...roid.com>
Signed-off-by: John Stultz <john.stultz@...aro.org>
---
 drivers/staging/android/ion/ion_carveout_heap.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/staging/android/ion/ion_carveout_heap.c b/drivers/staging/android/ion/ion_carveout_heap.c
index 1d53e91..b0b08c3 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;
 }
-- 
1.8.3.2

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