crypto: mv_cesa - Support processing of data from previous requests

Support processing of data from previous requests (as in hashing
update/final requests).

Signed-off-by: Uri Simchoni <uri@jdland.co.il>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/crypto/mv_cesa.c b/drivers/crypto/mv_cesa.c
index 49a22060fb51..d0fb10e701c5 100644
--- a/drivers/crypto/mv_cesa.c
+++ b/drivers/crypto/mv_cesa.c
@@ -184,10 +184,11 @@ static void copy_src_to_buf(struct req_progress *p, char *dbuf, int len)
 static void setup_data_in(void)
 {
         struct req_progress *p = &cpg->p;
-        p->crypt_len =
+        int data_in_sram =
             min(p->hw_nbytes - p->hw_processed_bytes, cpg->max_req_size);
-        copy_src_to_buf(p, cpg->sram + SRAM_DATA_IN_START,
-                        p->crypt_len);
+        copy_src_to_buf(p, cpg->sram + SRAM_DATA_IN_START + p->crypt_len,
+                        data_in_sram - p->crypt_len);
+        p->crypt_len = data_in_sram;
 }
 
 static void mv_process_current_q(int first_block)
@@ -298,6 +299,7 @@ static void dequeue_complete_req(void)
                 } while (need_copy_len > 0);
         }
 
+        cpg->p.crypt_len = 0;
 
         BUG_ON(cpg->eng_st != ENGINE_W_DEQUEUE);
         if (cpg->p.hw_processed_bytes < cpg->p.hw_nbytes) {