crypto: caam - add missing key_dma unmap

(struct caam_ctx) ctx->key_dma needs to be unmapped
when context is cleaned up.

Signed-off-by: Horia Geanta <horia.geanta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c
index a9ba8b159636..5f891254db73 100644
--- a/drivers/crypto/caam/caamalg.c
+++ b/drivers/crypto/caam/caamalg.c
@@ -2380,6 +2380,11 @@ static void caam_cra_exit(struct crypto_tfm *tfm)
                 dma_unmap_single(ctx->jrdev, ctx->sh_desc_givenc_dma,
                                  desc_bytes(ctx->sh_desc_givenc),
                                  DMA_TO_DEVICE);
+        if (ctx->key_dma &&
+            !dma_mapping_error(ctx->jrdev, ctx->key_dma))
+                dma_unmap_single(ctx->jrdev, ctx->key_dma,
+                                 ctx->enckeylen + ctx->split_key_pad_len,
+                                 DMA_TO_DEVICE);
 
         caam_jr_free(ctx->jrdev);
 }