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[4/6] soc: qcom: smem: fix off-by-one error in qcom_smem_alloc_private()

Message ID 20180410222542.29474-5-elder@linaro.org
State Accepted
Commit 8377f8181da8dce24ace68a43e280f6a6cb2c51c
Headers show
Series soc: qcom: smem: bug fixes | expand

Commit Message

Alex Elder April 10, 2018, 10:25 p.m. UTC 
It's OK if the space for a newly-allocated uncached entry actually
touches the free cached space boundary.  It's only a problem if it
would cross it.

Signed-off-by: Alex Elder <elder@linaro.org>

---
 drivers/soc/qcom/smem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
2.14.1
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Patch

diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c
index 82f0908b90e1..0ed263055988 100644
--- a/drivers/soc/qcom/smem.c
+++ b/drivers/soc/qcom/smem.c
@@ -375,7 +375,7 @@  static int qcom_smem_alloc_private(struct qcom_smem *smem,
 
 	/* Check that we don't grow into the cached region */
 	alloc_size = sizeof(*hdr) + ALIGN(size, 8);
-	if ((void *)hdr + alloc_size >= cached) {
+	if ((void *)hdr + alloc_size > cached) {
 		dev_err(smem->dev, "Out of memory\n");
 		return -ENOSPC;
 	}