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]>
ambv · Jun 28, 2021 · 66192b2 · 66192b2
1 parent e29dd5c
commit 66192b2
Showing 1 changed file with 3 additions and 0 deletions.
diff --git 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);