linux-kernel - [PATCH] crypto: hisilicon/qm - remove unneeded hardware cache write back

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Message-ID: <20220813103545.27370-1-shenyang39@huawei.com>
Date:   Sat, 13 Aug 2022 18:35:45 +0800
From:   Yang Shen <shenyang39@...wei.com>
To:     <herbert@...dor.apana.org.au>, <davem@...emloft.net>
CC:     <linux-kernel@...r.kernel.org>, <linux-crypto@...r.kernel.org>,
        <wangzhou1@...ilicon.com>, <liulongfang@...wei.com>
Subject: [PATCH] crypto: hisilicon/qm - remove unneeded hardware cache write back

From: Weili Qian <qianweili@...wei.com>

Data in the hardware cache needs to be written back to the memory
before the queue memory is released. Currently, the queue memory is
applied for when the driver is loaded and released when the driver is
removed. Therefore, the hardware cache does not need to be written back
when process puts queue.

Signed-off-by: Weili Qian <qianweili@...wei.com>
Signed-off-by: Yang Shen <shenyang39@...wei.com>
---
 drivers/crypto/hisilicon/qm.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index 771ba73468f7..0f8ae8f99413 100644
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -3258,7 +3258,6 @@ static void hisi_qm_uacce_put_queue(struct uacce_queue *q)
 {
 	struct hisi_qp *qp = q->priv;

-	hisi_qm_cache_wb(qp->qm);
 	hisi_qm_release_qp(qp);
 }

--
2.33.0