netdev - Re: [Intel-wired-lan] [PATCH iwl-net] ixgbe: fix media type detection for E610 device

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Message-ID: <aa596679-a229-4335-806b-45539d8ec1d2@molgen.mpg.de>
Date: Tue, 18 Feb 2025 19:25:35 +0100
From: Paul Menzel <pmenzel@...gen.mpg.de>
To: Piotr Kwapulinski <piotr.kwapulinski@...el.com>
Cc: intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org, andrew@...n.ch,
 Przemek Kitszel <przemyslaw.kitszel@...el.com>
Subject: Re: [Intel-wired-lan] [PATCH iwl-net] ixgbe: fix media type detection
 for E610 device

Dear Piotr,


Thank you for your patch.

Am 18.02.25 um 17:17 schrieb Piotr Kwapulinski:
> The commit 23c0e5a16bcc ("ixgbe: Add link management support for E610
> device") introduced incorrect media type detection for E610 device. It
> reproduces when advertised speed is modified after driver reload.

It’d be great if you gave a concrete example.

> Clear the previous outdated PHY type.

Only the high byte?

> Fixes: 23c0e5a16bcc ("ixgbe: Add link management support for E610 device")
> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
> Signed-off-by: Piotr Kwapulinski <piotr.kwapulinski@...el.com>
> ---
>   drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c
> index 683c668..0dfefd2 100644
> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c
> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c
> @@ -1453,9 +1453,11 @@ enum ixgbe_media_type ixgbe_get_media_type_e610(struct ixgbe_hw *hw)
>   			hw->link.link_info.phy_type_low = 0;
>   		} else {
>   			highest_bit = fls64(le64_to_cpu(pcaps.phy_type_low));
> -			if (highest_bit)
> +			if (highest_bit) {
>   				hw->link.link_info.phy_type_low =
>   					BIT_ULL(highest_bit - 1);
> +				hw->link.link_info.phy_type_high = 0;
> +			}
>   		}
>   	}


Kind regards,

Paul