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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/drivers/crypto/hisilicon/qm.h
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@@ -289,14 +289,14 @@
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 static inline int q_num_set(const char *val, const struct kernel_param *kp,
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 			    unsigned int device)
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 {
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-	struct pci_dev *pdev = pci_get_device(PCI_VENDOR_ID_HUAWEI,
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-					      device, NULL);
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+	struct pci_dev *pdev;
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 	u32 n, q_num;
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 	int ret;
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 	if (!val)
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 		return -EINVAL;
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+	pdev = pci_get_device(PCI_VENDOR_ID_HUAWEI, device, NULL);
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 	if (!pdev) {
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 		q_num = min_t(u32, QM_QNUM_V1, QM_QNUM_V2);
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 		pr_info("No device found currently, suppose queue number is %d\n",
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@@ -306,6 +306,8 @@
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 			q_num = QM_QNUM_V1;
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 		else
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 			q_num = QM_QNUM_V2;
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+
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+		pci_dev_put(pdev);
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 	}
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 	ret = kstrtou32(val, 10, &n);