From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Thu, 9 Nov 2017 21:25:43 +0000 (+0300)
Subject: crypto: chelsio - Fix an error code in chcr_hash_dma_map()
X-Git-Tag: v4.15.11~78
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4fc44467b7d4f8a6a8219abe40dc92ac39555239;p=thirdparty%2Fkernel%2Fstable.git

crypto: chelsio - Fix an error code in chcr_hash_dma_map()


[ Upstream commit 7814f552ff826fefa5e1b24083c7a06a9378e9ef ]

The dma_map_sg() function returns zero on error and positive values on
success.  We want to return -ENOMEM on failure here and zero on success.

Fixes: 2f47d5804311 ("crypto: chelsio - Move DMA un/mapping to chcr from lld cxgb4 driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/crypto/chelsio/chcr_algo.c b/drivers/crypto/chelsio/chcr_algo.c
index 4eed7171e2ae4..38fe59b5c6891 100644
--- a/drivers/crypto/chelsio/chcr_algo.c
+++ b/drivers/crypto/chelsio/chcr_algo.c
@@ -2414,7 +2414,7 @@ static inline int chcr_hash_dma_map(struct device *dev,
 	error = dma_map_sg(dev, req->src, sg_nents(req->src),
 			   DMA_TO_DEVICE);
 	if (!error)
-		return error;
+		return -ENOMEM;
 	req_ctx->is_sg_map = 1;
 	return 0;
 }