mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 19:00:25 +00:00
crypto: mv_cesa - Fix situation where the dest sglist is organized differently than the source sglist
Bugfix for situations where the destination scatterlist has a different buffer structure than the source scatterlist (e.g. source has one 2K buffer and dest has 2 1K buffers) Signed-off-by: Uri Simchoni <uri@jdland.co.il> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
parent
6bc6fcd609
commit
f565e67ec1
1 changed files with 9 additions and 5 deletions
|
@ -242,6 +242,8 @@ static void dequeue_complete_req(void)
|
|||
struct ablkcipher_request *req = cpg->cur_req;
|
||||
void *buf;
|
||||
int ret;
|
||||
int need_copy_len = cpg->p.crypt_len;
|
||||
int sram_offset = 0;
|
||||
|
||||
cpg->p.total_req_bytes += cpg->p.crypt_len;
|
||||
do {
|
||||
|
@ -257,14 +259,16 @@ static void dequeue_complete_req(void)
|
|||
buf = cpg->p.dst_sg_it.addr;
|
||||
buf += cpg->p.dst_start;
|
||||
|
||||
dst_copy = min(cpg->p.crypt_len, cpg->p.sg_dst_left);
|
||||
|
||||
memcpy(buf, cpg->sram + SRAM_DATA_OUT_START, dst_copy);
|
||||
dst_copy = min(need_copy_len, cpg->p.sg_dst_left);
|
||||
|
||||
memcpy(buf,
|
||||
cpg->sram + SRAM_DATA_OUT_START + sram_offset,
|
||||
dst_copy);
|
||||
sram_offset += dst_copy;
|
||||
cpg->p.sg_dst_left -= dst_copy;
|
||||
cpg->p.crypt_len -= dst_copy;
|
||||
need_copy_len -= dst_copy;
|
||||
cpg->p.dst_start += dst_copy;
|
||||
} while (cpg->p.crypt_len > 0);
|
||||
} while (need_copy_len > 0);
|
||||
|
||||
BUG_ON(cpg->eng_st != ENGINE_W_DEQUEUE);
|
||||
if (cpg->p.total_req_bytes < req->nbytes) {
|
||||
|
|
Loading…
Reference in a new issue