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authorPan Bian <bianpan2016@163.com>2017-08-08 15:42:47 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2017-08-17 10:53:33 +0200
commitef4064bb3f6a1037cbda8d025f564aab5bd2de35 (patch)
tree5a78aee0fd343ea43a1a409c672806be8bcdb8d3
parentlib/mpi: fix build with clang (diff)
downloadlinux-ef4064bb3f6a1037cbda8d025f564aab5bd2de35.tar.xz
linux-ef4064bb3f6a1037cbda8d025f564aab5bd2de35.zip
crypto: ccp - use dma_mapping_error to check map error
The return value of dma_map_single() should be checked by dma_mapping_error(). However, in function ccp_init_dm_workarea(), its return value is checked against NULL, which could result in failures. Signed-off-by: Pan Bian <bianpan2016@163.com> Acked-by: Gary R Hook <gary.hook@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
-rw-r--r--drivers/crypto/ccp/ccp-ops.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/crypto/ccp/ccp-ops.c b/drivers/crypto/ccp/ccp-ops.c
index 804924e48c89..406b95329b3d 100644
--- a/drivers/crypto/ccp/ccp-ops.c
+++ b/drivers/crypto/ccp/ccp-ops.c
@@ -168,7 +168,7 @@ static int ccp_init_dm_workarea(struct ccp_dm_workarea *wa,
wa->dma.address = dma_map_single(wa->dev, wa->address, len,
dir);
- if (!wa->dma.address)
+ if (dma_mapping_error(wa->dev, wa->dma.address))
return -ENOMEM;
wa->dma.length = len;