In certain platforms like DRA7xx having memory > 2GB with LPAE enabled
has a constraint that DMA can be done with the initial 2GB and marks it
as ZONE_DMA. But openssl when used with cryptodev does not make sure that
input buffer is DMA capable. So, adding a check to verify if the input
buffer is capable of DMA.
Signed-off-by: Tero Kristo <t-kristo@xxxxxx>
Reported-by: Aparna Balasubramanian <aparnab@xxxxxx>
Reviewed-by: Lokesh Vutla <lokeshvutla@xxxxxx>
---
drivers/crypto/omap-sham.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
index 86b89ac..ce398b7 100644
--- a/drivers/crypto/omap-sham.c
+++ b/drivers/crypto/omap-sham.c
@@ -759,6 +759,13 @@ static int omap_sham_align_sgs(struct scatterlist *sg,
while (nbytes > 0 && sg_tmp) {
n++;
+#ifdef CONFIG_ZONE_DMA
+ if (page_zonenum(sg_page(sg_tmp)) != ZONE_DMA) {
+ aligned = false;
+ break;
+ }
+#endif
+
if (offset < sg_tmp->length) {
if (!IS_ALIGNED(offset + sg_tmp->offset, 4)) {
aligned = false;
--
1.9.1
--
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