hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

crypto: axis - give DMA the start of the status buffer 

The driver was optimized to only do cache maintenance for the last
word of the dma descriptor status array. Unfortunately an omission
also passed the last word as the address of the array start to the DMA
engine. In most cases this goes unnoticed since the hardware aligns
the address to a 64 byte boundary.

Signed-off-by: Lars Persson <larper@axis.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Lars Persson 2019-01-23 12:59:43 +01:00 committed by Herbert Xu
parent c34a83820f
commit 0d1d482416
1 changed files with 7 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/crypto/axis/artpec6_crypto.c
View File

@ -665,8 +665,8 @@ artpec6_crypto_dma_map_descs(struct artpec6_crypto_req_common *common)
* to be written.
*/
return artpec6_crypto_dma_map_single(common,
dma->stat + dma->in_cnt - 1,
sizeof(dma->stat[0]),
dma->stat,
sizeof(dma->stat[0]) * dma->in_cnt,
DMA_BIDIRECTIONAL,
&dma->stat_dma_addr);
}
@ -2087,9 +2087,12 @@ static void artpec6_crypto_task(unsigned long data)
list_for_each_entry_safe(req, n, &ac->pending, list) {
struct artpec6_crypto_dma_descriptors *dma = req->dma;
u32 stat;
dma_addr_t stataddr;
dma_sync_single_for_cpu(artpec6_crypto_dev, dma->stat_dma_addr,
sizeof(dma->stat[0]),
stataddr = dma->stat_dma_addr + 4 * (req->dma->in_cnt - 1);
dma_sync_single_for_cpu(artpec6_crypto_dev,
stataddr,
4,
DMA_BIDIRECTIONAL);
stat = req->dma->stat[req->dma->in_cnt-1];