| Message ID | 1624675833-20107-1-git-send-email-yekai13@huawei.com (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Herbert Xu |
| Headers | show |
| Series | crypto: hisilicon/sec - fix the process of disabling sva prefetching | expand |
On Sat, Jun 26, 2021 at 10:50:33AM +0800, Kai Ye wrote: > The open interface of the sva prefetching function is distinguish the chip > version. But the close interface of the sva prefetching function doesn't > distinguish the chip version. As a result, the sva prefetching close > operation is also performed on Kunpeng920, those registers are important > on Kunpeng920, which eventually leads to abnormal hardware problems. So > need to fix it immediately. > > Signed-off-by: Kai Ye <yekai13@huawei.com> > --- > drivers/crypto/hisilicon/sec2/sec_main.c | 3 +++ > 1 file changed, 3 insertions(+) Patch applied. Thanks.
diff --git a/drivers/crypto/hisilicon/sec2/sec_main.c b/drivers/crypto/hisilicon/sec2/sec_main.c index 8ab4e67..710ea8d 100644 --- a/drivers/crypto/hisilicon/sec2/sec_main.c +++ b/drivers/crypto/hisilicon/sec2/sec_main.c @@ -363,6 +363,9 @@ static void sec_close_sva_prefetch(struct hisi_qm *qm) u32 val; int ret; + if (qm->ver < QM_HW_V3) + return; + val = readl_relaxed(qm->io_base + SEC_PREFETCH_CFG); val |= SEC_PREFETCH_DISABLE; writel(val, qm->io_base + SEC_PREFETCH_CFG);
The open interface of the sva prefetching function is distinguish the chip version. But the close interface of the sva prefetching function doesn't distinguish the chip version. As a result, the sva prefetching close operation is also performed on Kunpeng920, those registers are important on Kunpeng920, which eventually leads to abnormal hardware problems. So need to fix it immediately. Signed-off-by: Kai Ye <yekai13@huawei.com> --- drivers/crypto/hisilicon/sec2/sec_main.c | 3 +++ 1 file changed, 3 insertions(+)