linux-kernel - [PATCH AUTOSEL 6.0 01/16] crypto: hisilicon/hpre

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Date:   Mon, 19 Dec 2022 20:21:11 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Zhiqi Song <songzhiqi1@...wei.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Sasha Levin <sashal@...nel.org>, liulongfang@...wei.com,
        davem@...emloft.net, linux-crypto@...r.kernel.org
Subject: [PATCH AUTOSEL 6.0 01/16] crypto: hisilicon/hpre - fix resource leak in remove process

From: Zhiqi Song <songzhiqi1@...wei.com>

[ Upstream commit 45e6319bd5f2154d8b8c9f1eaa4ac030ba0d330c ]

In hpre_remove(), when the disable operation of qm sriov failed,
the following logic should continue to be executed to release the
remaining resources that have been allocated, instead of returning
directly, otherwise there will be resource leakage.

Signed-off-by: Zhiqi Song <songzhiqi1@...wei.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/crypto/hisilicon/hpre/hpre_main.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/crypto/hisilicon/hpre/hpre_main.c b/drivers/crypto/hisilicon/hpre/hpre_main.c
index 9d529df0eab9..13525793ff60 100644
--- a/drivers/crypto/hisilicon/hpre/hpre_main.c
+++ b/drivers/crypto/hisilicon/hpre/hpre_main.c
@@ -1287,18 +1287,12 @@ static int hpre_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 static void hpre_remove(struct pci_dev *pdev)
 {
 	struct hisi_qm *qm = pci_get_drvdata(pdev);
-	int ret;
 
 	hisi_qm_pm_uninit(qm);
 	hisi_qm_wait_task_finish(qm, &hpre_devices);
 	hisi_qm_alg_unregister(qm, &hpre_devices);
-	if (qm->fun_type == QM_HW_PF && qm->vfs_num) {
-		ret = hisi_qm_sriov_disable(pdev, true);
-		if (ret) {
-			pci_err(pdev, "Disable SRIOV fail!\n");
-			return;
-		}
-	}
+	if (qm->fun_type == QM_HW_PF && qm->vfs_num)
+		hisi_qm_sriov_disable(pdev, true);
 
 	hpre_debugfs_exit(qm);
 	hisi_qm_stop(qm, QM_NORMAL);
-- 
2.35.1