From: Kai Ye <yekai13@huawei.com>
Date: Mon, 27 Sep 2021 16:16:55 +0800
Subject: crypto: hisilicon/qm - modify the uacce mode check
Git-commit: 183b60e005975d3c84c22199ca64a9221e620fb6
Patch-mainline: v5.16-rc1
References: bsc#1201391

As qm should register to uacce in UACCE_DEV_SVA mode,
this patch modifies to checks uacce mode before doing uacce
registration.

Signed-off-by: Kai Ye <yekai13@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
---
 drivers/crypto/hisilicon/qm.c | 22 ++++++++++++++--------
 1 file changed, 14 insertions(+), 8 deletions(-)

diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index 6c57149e28f0..fed52ae516ba 100644
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -3127,7 +3127,7 @@ static int qm_alloc_uacce(struct hisi_qm *qm)
 	if (IS_ERR(uacce))
 		return PTR_ERR(uacce);
 
-	if (uacce->flags & UACCE_DEV_SVA && qm->mode == UACCE_MODE_SVA) {
+	if (uacce->flags & UACCE_DEV_SVA) {
 		qm->use_sva = true;
 	} else {
 		/* only consider sva case */
@@ -3402,8 +3402,10 @@ void hisi_qm_uninit(struct hisi_qm *qm)
 
 	qm_irq_unregister(qm);
 	hisi_qm_pci_uninit(qm);
-	uacce_remove(qm->uacce);
-	qm->uacce = NULL;
+	if (qm->use_sva) {
+		uacce_remove(qm->uacce);
+		qm->uacce = NULL;
+	}
 
 	up_write(&qm->qps_lock);
 }
@@ -5823,9 +5825,11 @@ int hisi_qm_init(struct hisi_qm *qm)
 			goto err_irq_register;
 	}
 
-	ret = qm_alloc_uacce(qm);
-	if (ret < 0)
-		dev_warn(dev, "fail to alloc uacce (%d)\n", ret);
+	if (qm->mode == UACCE_MODE_SVA) {
+		ret = qm_alloc_uacce(qm);
+		if (ret < 0)
+			dev_warn(dev, "fail to alloc uacce (%d)\n", ret);
+	}
 
 	ret = hisi_qm_memory_init(qm);
 	if (ret)
@@ -5838,8 +5842,10 @@ int hisi_qm_init(struct hisi_qm *qm)
 	return 0;
 
 err_alloc_uacce:
-	uacce_remove(qm->uacce);
-	qm->uacce = NULL;
+	if (qm->use_sva) {
+		uacce_remove(qm->uacce);
+		qm->uacce = NULL;
+	}
 err_irq_register:
 	qm_irq_unregister(qm);
 err_pci_init:
-- 
2.36.1