[dpdk-stable] [PATCH v1] crypto/virtio: fix return value check

[dpdk-stable] [PATCH v1] crypto/virtio: fix return value check

[Chenbo Xia]

Fix unchecked return value issue for rte_pci_read_config.

Coverity issue: 302861
Fixes: 25500d4b8076 ("crypto/virtio: support device init")
Cc: stable@dpdk.org

Signed-off-by: Chenbo Xia <chenbo.xia@intel.com>
---
 drivers/crypto/virtio/virtio_pci.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/virtio/virtio_pci.c b/drivers/crypto/virtio/virtio_pci.c
index 0c0c64471..8137b3c5a 100644
--- a/drivers/crypto/virtio/virtio_pci.c
+++ b/drivers/crypto/virtio/virtio_pci.c
@@ -397,9 +397,13 @@ virtio_read_caps(struct rte_pci_device *dev, struct virtio_crypto_hw *hw)
 			hw->common_cfg = get_cfg_addr(dev, &cap);
 			break;
 		case VIRTIO_PCI_CAP_NOTIFY_CFG:
-			rte_pci_read_config(dev, &hw->notify_off_multiplier,
+			ret = rte_pci_read_config(dev, &hw->notify_off_multiplier,
 					4, pos + sizeof(cap));
-			hw->notify_base = get_cfg_addr(dev, &cap);
+			if (ret != 4)
+				VIRTIO_CRYPTO_INIT_LOG_ERR(
+					"failed to read notify_off_multiplier: ret %d", ret);
+			else
+				hw->notify_base = get_cfg_addr(dev, &cap);
 			break;
 		case VIRTIO_PCI_CAP_DEVICE_CFG:
 			hw->dev_cfg = get_cfg_addr(dev, &cap);
-- 
2.17.1