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path: root/drivers/crypto/mv_cesa.c
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Diffstat (limited to 'drivers/crypto/mv_cesa.c')
-rw-r--r--drivers/crypto/mv_cesa.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/crypto/mv_cesa.c b/drivers/crypto/mv_cesa.c
index 37d9f0688e75..018a95ce0c9b 100644
--- a/drivers/crypto/mv_cesa.c
+++ b/drivers/crypto/mv_cesa.c
@@ -242,6 +242,8 @@ static void dequeue_complete_req(void)
242 struct ablkcipher_request *req = cpg->cur_req; 242 struct ablkcipher_request *req = cpg->cur_req;
243 void *buf; 243 void *buf;
244 int ret; 244 int ret;
245 int need_copy_len = cpg->p.crypt_len;
246 int sram_offset = 0;
245 247
246 cpg->p.total_req_bytes += cpg->p.crypt_len; 248 cpg->p.total_req_bytes += cpg->p.crypt_len;
247 do { 249 do {
@@ -257,14 +259,16 @@ static void dequeue_complete_req(void)
257 buf = cpg->p.dst_sg_it.addr; 259 buf = cpg->p.dst_sg_it.addr;
258 buf += cpg->p.dst_start; 260 buf += cpg->p.dst_start;
259 261
260 dst_copy = min(cpg->p.crypt_len, cpg->p.sg_dst_left); 262 dst_copy = min(need_copy_len, cpg->p.sg_dst_left);
261
262 memcpy(buf, cpg->sram + SRAM_DATA_OUT_START, dst_copy);
263 263
264 memcpy(buf,
265 cpg->sram + SRAM_DATA_OUT_START + sram_offset,
266 dst_copy);
267 sram_offset += dst_copy;
264 cpg->p.sg_dst_left -= dst_copy; 268 cpg->p.sg_dst_left -= dst_copy;
265 cpg->p.crypt_len -= dst_copy; 269 need_copy_len -= dst_copy;
266 cpg->p.dst_start += dst_copy; 270 cpg->p.dst_start += dst_copy;
267 } while (cpg->p.crypt_len > 0); 271 } while (need_copy_len > 0);
268 272
269 BUG_ON(cpg->eng_st != ENGINE_W_DEQUEUE); 273 BUG_ON(cpg->eng_st != ENGINE_W_DEQUEUE);
270 if (cpg->p.total_req_bytes < req->nbytes) { 274 if (cpg->p.total_req_bytes < req->nbytes) {