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

[Ferruh Yigit]

On 11/6/2020 3:51 AM, Lijun Ou wrote:
> 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 at dpdk.org
> 
> Signed-off-by: Lijun Ou <oulijun at 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",

Can you please drop this unrelated change from the patch?

>   				     (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;
>