On 08/05/2020 08:08, Herbert Xu wrote:
On Wed, Apr 29, 2020 at 05:42:02PM +0300, Tero Kristo wrote:
diff --git a/drivers/crypto/omap-crypto.c b/drivers/crypto/omap-crypto.c
index cc88b7362bc2..cbc5a4151c3c 100644
--- a/drivers/crypto/omap-crypto.c
+++ b/drivers/crypto/omap-crypto.c
@@ -178,11 +178,14 @@ static void omap_crypto_copy_data(struct scatterlist *src,
amt = min(src->length - srco, dst->length - dsto);
amt = min(len, amt);
- srcb = sg_virt(src) + srco;
- dstb = sg_virt(dst) + dsto;
+ srcb = kmap_atomic(sg_page(src)) + srco + src->offset;
+ dstb = kmap_atomic(sg_page(dst)) + dsto + dst->offset;
memcpy(dstb, srcb, amt);
+ kunmap_atomic(srcb);
+ kunmap_atomic(dstb);
With dst you also need to flush the cache. Please refer to the
flush dcache call in include/crypto/scatterwalk.h.
Ok, let me try that out, flushing a single page should be fine (meaning
not catastrophic to performance.)
-Tero
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