[dpdk-dev] [PATCH v2 4/5] net/hns3: check PCI config space writes

[Lijun Ou <oulijun@huawei.com>]

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>
---
V1->V2:
- rte_pci_wirte_config -> rte_pci_write_config
---
 drivers/net/hns3/hns3_ethdev_vf.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c
index 2e9bfda..2f6d91b 100644
--- a/drivers/net/hns3/hns3_ethdev_vf.c
+++ b/drivers/net/hns3/hns3_ethdev_vf.c
@@ -139,7 +139,7 @@ hns3vf_enable_msix(const struct rte_pci_device *device, bool op)
 		ret = rte_pci_read_config(device, &control, sizeof(control),
 				    (pos + PCI_MSIX_FLAGS));
 		if (ret < 0) {
-			PMD_INIT_LOG(ERR, "Failed to read PCI offset 0x%x",
+			PMD_INIT_LOG(ERR, "failed to read PCI offset 0x%x",
 				     (pos + PCI_MSIX_FLAGS));
 			return -ENXIO;
 		}
@@ -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;
-- 
2.7.4