Commit 4c219855 authored Feb 27, 2018 by Tero Kristo Committed by Herbert Xu Mar 09, 2018

crypto: omap-sham - Verify page zone of scatterlists before starting DMA



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@ti.com>
Reported-by: Aparna Balasubramanian <aparnab@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

parent 6a4967c3

drivers/crypto/omap-sham.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -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;

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