crypto: mv_cesa - fix hashing of chunks > 1920 bytes

[deliverable/linux.git] / drivers / crypto / mv_cesa.c

diff --git a/drivers/crypto/mv_cesa.c b/drivers/crypto/mv_cesa.c
index 3cf303ee3fe3449efd185a8567252a36759d5bca..38a3297ae2befcfaca6739abde2005ee1fa34d26 100644 (file)
--- a/drivers/crypto/mv_cesa.c
+++ b/drivers/crypto/mv_cesa.c
@@ -342,11 +342,13 @@ static void mv_process_hash_current(int first_block)
                else
                        op.config |= CFG_MID_FRAG;
 
-               writel(req_ctx->state[0], cpg->reg + DIGEST_INITIAL_VAL_A);
-               writel(req_ctx->state[1], cpg->reg + DIGEST_INITIAL_VAL_B);
-               writel(req_ctx->state[2], cpg->reg + DIGEST_INITIAL_VAL_C);
-               writel(req_ctx->state[3], cpg->reg + DIGEST_INITIAL_VAL_D);
-               writel(req_ctx->state[4], cpg->reg + DIGEST_INITIAL_VAL_E);
+               if (first_block) {
+                       writel(req_ctx->state[0], cpg->reg + DIGEST_INITIAL_VAL_A);
+                       writel(req_ctx->state[1], cpg->reg + DIGEST_INITIAL_VAL_B);
+                       writel(req_ctx->state[2], cpg->reg + DIGEST_INITIAL_VAL_C);
+                       writel(req_ctx->state[3], cpg->reg + DIGEST_INITIAL_VAL_D);
+                       writel(req_ctx->state[4], cpg->reg + DIGEST_INITIAL_VAL_E);
+               }
        }
 
        memcpy(cpg->sram + SRAM_CONFIG, &op, sizeof(struct sec_accel_config));