On Wed, Aug 16, 2023 at 11:29:24PM +0800, Jisheng Zhang wrote:
> The snps dwmac IP may support safety features, and those Safety
> Feature Correctible Error and Uncorrectible Error irqs may be
> separate irqs. Add support to parse the safety irqs from DT.
>
> Signed-off-by: Jisheng Zhang <jszhang@xxxxxxxxxx>
> Acked-by: Alexandre TORGUE <alexandre.torgue@xxxxxxxxxxx>
> ---
> .../net/ethernet/stmicro/stmmac/stmmac_platform.c | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> index be8e79c7aa34..4a2002eea870 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> @@ -737,6 +737,18 @@ int stmmac_get_platform_resources(struct platform_device *pdev,
> dev_info(&pdev->dev, "IRQ eth_lpi not found\n");
> }
>
> + stmmac_res->sfty_ce_irq = platform_get_irq_byname_optional(pdev, "sfty_ce");
> + if (stmmac_res->sfty_ce_irq < 0) {
> + if (stmmac_res->sfty_ce_irq == -EPROBE_DEFER)
> + return -EPROBE_DEFER;
> + }
I think the error checking should be better than this. If i'm reading
the code correctly, it should return -ENXIO if it does not exist, and
since it is supposed to be optional, you can continue. Other values <
0 are real errors, and it should be returned.
Andrew
