[PATCH v0 1/1] net/octeon_ep: handle interrupt enable failure

[Jerin Jacob]

On Mon, Jul 14, 2025 at 6:08 PM Vamsi Krishna <vattunuru at marvell.com> wrote:
>
> From: Vamsi Attunuru <vattunuru at marvell.com>
>
> Patch checks the return value of interrupt enable
> and returns gracefully if file handler is not available.
>
> Cc: stable at dpdk.org


Added
 Fixes: 826da0f56d42 ("net/octeon_ep: extend mailbox functionality")


Applied to dpdk-next-net-mrvl/for-main. Thanks


>
> Signed-off-by: Vamsi Attunuru <vattunuru at marvell.com>
> ---
>  drivers/net/octeon_ep/otx_ep_mbox.c | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/octeon_ep/otx_ep_mbox.c b/drivers/net/octeon_ep/otx_ep_mbox.c
> index 1d7e08d2cc..c83bb81474 100644
> --- a/drivers/net/octeon_ep/otx_ep_mbox.c
> +++ b/drivers/net/octeon_ep/otx_ep_mbox.c
> @@ -355,16 +355,22 @@ otx_ep_mbox_init(struct rte_eth_dev *eth_dev)
>         struct otx_ep_device *otx_ep = (struct otx_ep_device *)eth_dev->data->dev_private;
>         struct rte_pci_device *pdev = RTE_ETH_DEV_TO_PCI(eth_dev);
>         uint64_t reg_val;
> +       int rc;
>
>         otx_ep_mbox_version_check(otx_ep);
>
>         rte_intr_callback_register(pdev->intr_handle, otx_ep_mbox_intr_handler, (void *)eth_dev);
>
> -       if (rte_intr_enable(pdev->intr_handle)) {
> +       rc = rte_intr_enable(pdev->intr_handle);
> +
> +       if (!(rc == -1 || rc == 0)) {
>                 otx_ep_err("rte_intr_enable failed");
>                 return -1;
>         }
>
> +       if (rc == -1)
> +               return 0;
> +
>         reg_val = otx2_read64(otx_ep->hw_addr + CNXK_EP_R_MBOX_PF_VF_INT(0));
>         if (reg_val == UINT64_MAX)
>                 return -ENODEV;
> --
> 2.34.1
>