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@xxxxxxxxxx> --- drivers/crypto/hisilicon/sec2/sec_main.c | 3 +++ 1 file changed, 3 insertions(+) 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); -- 2.7.4
