staging: ccree: simplify expression with local var

Simplify expression by using a local variable for better code
readability.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/ccree/ssi_buffer_mgr.c b/drivers/staging/ccree/ssi_buffer_mgr.c
index 099d83ddb0e755a3be1f0d1fd99db4356bd5b165..490dd5a2ec551d41576c796eeeb6a724ff21f1cb 100644 (file)
--- a/drivers/staging/ccree/ssi_buffer_mgr.c
+++ b/drivers/staging/ccree/ssi_buffer_mgr.c
@@ -917,6 +917,7 @@ static int cc_prepare_aead_data_mlli(struct ssi_drvdata *drvdata,
        unsigned int authsize = areq_ctx->req_authsize;
        int rc = 0, icv_nents;
        struct device *dev = drvdata_to_dev(drvdata);
+       struct scatterlist *sg;
 
        if (req->src == req->dst) {
                /*INPLACE*/
@@ -955,12 +956,11 @@ static int cc_prepare_aead_data_mlli(struct ssi_drvdata *drvdata,
                                        areq_ctx->mac_buf_dma_addr;
                        }
                } else { /* Contig. ICV */
+                       sg = &areq_ctx->src_sgl[areq_ctx->src.nents - 1];
                        /*Should hanlde if the sg is not contig.*/
-                       areq_ctx->icv_dma_addr = sg_dma_address(
-                               &areq_ctx->src_sgl[areq_ctx->src.nents - 1]) +
+                       areq_ctx->icv_dma_addr = sg_dma_address(sg) +
                                (*src_last_bytes - authsize);
-                       areq_ctx->icv_virt_addr = sg_virt(
-                               &areq_ctx->src_sgl[areq_ctx->src.nents - 1]) +
+                       areq_ctx->icv_virt_addr = sg_virt(sg) +
                                (*src_last_bytes - authsize);
                }
 
@@ -993,12 +993,11 @@ static int cc_prepare_aead_data_mlli(struct ssi_drvdata *drvdata,
                        areq_ctx->icv_virt_addr = areq_ctx->backup_mac;
 
                } else { /* Contig. ICV */
+                       sg = &areq_ctx->src_sgl[areq_ctx->src.nents - 1];
                        /*Should hanlde if the sg is not contig.*/
-                       areq_ctx->icv_dma_addr = sg_dma_address(
-                               &areq_ctx->src_sgl[areq_ctx->src.nents - 1]) +
+                       areq_ctx->icv_dma_addr = sg_dma_address(sg) +
                                (*src_last_bytes - authsize);
-                       areq_ctx->icv_virt_addr = sg_virt(
-                               &areq_ctx->src_sgl[areq_ctx->src.nents - 1]) +
+                       areq_ctx->icv_virt_addr = sg_virt(sg) +
                                (*src_last_bytes - authsize);
                }
 
@@ -1023,12 +1022,11 @@ static int cc_prepare_aead_data_mlli(struct ssi_drvdata *drvdata,
                }
 
                if (!areq_ctx->is_icv_fragmented) {
+                       sg = &areq_ctx->dst_sgl[areq_ctx->dst.nents - 1];
                        /* Contig. ICV */
-                       areq_ctx->icv_dma_addr = sg_dma_address(
-                               &areq_ctx->dst_sgl[areq_ctx->dst.nents - 1]) +
+                       areq_ctx->icv_dma_addr = sg_dma_address(sg) +
                                (*dst_last_bytes - authsize);
-                       areq_ctx->icv_virt_addr = sg_virt(
-                               &areq_ctx->dst_sgl[areq_ctx->dst.nents - 1]) +
+                       areq_ctx->icv_virt_addr = sg_virt(sg) +
                                (*dst_last_bytes - authsize);
                } else {
                        areq_ctx->icv_dma_addr = areq_ctx->mac_buf_dma_addr;