From: Antoine Tenart <antoine.tenart@bootlin.com>
Date: Mon, 27 May 2019 14:51:00 +0000 (+0200)
Subject: crypto: inside-secure - unify cache reset
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=aa52428698aeb1c1d4ebb7c3e9de3e7bdce25704;p=linux.git

crypto: inside-secure - unify cache reset

This patch unify the way the cache related data is zeroed when the cache
buffer is DMA unmapped. It should not change the driver behaviour, but
improves the code safety and readability.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/inside-secure/safexcel_hash.c b/drivers/crypto/inside-secure/safexcel_hash.c
index 58ce480690eb0..a79a73bb3969a 100644
--- a/drivers/crypto/inside-secure/safexcel_hash.c
+++ b/drivers/crypto/inside-secure/safexcel_hash.c
@@ -183,6 +183,7 @@ static int safexcel_handle_req_result(struct safexcel_crypto_priv *priv, int rin
 		dma_unmap_single(priv->dev, sreq->cache_dma, sreq->cache_sz,
 				 DMA_TO_DEVICE);
 		sreq->cache_dma = 0;
+		sreq->cache_sz = 0;
 	}
 
 	if (sreq->finish)
@@ -344,6 +345,7 @@ unmap_cache:
 	if (req->cache_dma) {
 		dma_unmap_single(priv->dev, req->cache_dma, req->cache_sz,
 				 DMA_TO_DEVICE);
+		req->cache_dma = 0;
 		req->cache_sz = 0;
 	}