From: Lijun Ou <oulijun@huawei.com>
Date: Mon, 9 Nov 2020 14:29:00 +0000 (+0800)
Subject: net/hns3: check PCI config space write
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=6dd32ded17d85eec8c15f4635b668528520256c4;p=dpdk.git

net/hns3: check PCI config space write

Here adds a check for the return value when calling
rte_pci_write_config.

Coverity issue: 363714
Fixes: cea37e513329 ("net/hns3: fix FLR reset")
Cc: stable@dpdk.org

Signed-off-by: Lijun Ou <oulijun@huawei.com>
---

diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c
index 6f71cd6606..1535f26713 100644
--- a/drivers/net/hns3/hns3_ethdev_vf.c
+++ b/drivers/net/hns3/hns3_ethdev_vf.c
@@ -148,8 +148,12 @@ hns3vf_enable_msix(const struct rte_pci_device *device, bool op)
 			control |= PCI_MSIX_FLAGS_ENABLE;
 		else
 			control &= ~PCI_MSIX_FLAGS_ENABLE;
-		rte_pci_write_config(device, &control, sizeof(control),
-				     (pos + PCI_MSIX_FLAGS));
+		ret = rte_pci_write_config(device, &control, sizeof(control),
+					  (pos + PCI_MSIX_FLAGS));
+		if (ret < 0) {
+			PMD_INIT_LOG(ERR, "failed to write PCI offset 0x%x",
+				    (pos + PCI_MSIX_FLAGS));
+		}
 		return 0;
 	}
 	return -ENXIO;