crypto: hisilicon/sec - fix the process of disabling sva prefetching

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 <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>

diff --git a/drivers/crypto/hisilicon/sec2/sec_main.c b/drivers/crypto/hisilicon/sec2/sec_main.c
index d120ce3e34eda9d60d6ad18ae73f885c587a2db3..490db7bccf6192204b48ed818fbc35991263bd52 100644 (file)
--- a/drivers/crypto/hisilicon/sec2/sec_main.c
+++ b/drivers/crypto/hisilicon/sec2/sec_main.c
@@ -364,6 +364,9 @@ 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);