linux-kernel - Re: [PATCH net v2] net: sparx5: fix wrong config being used when reconfiguring PCS

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Date: Tue, 9 Apr 2024 17:03:55 -0700
From: Jacob Keller <jacob.e.keller@...el.com>
To: Daniel Machon <daniel.machon@...rochip.com>, "David S. Miller"
	<davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
	<kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Lars Povlsen
	<lars.povlsen@...rochip.com>, Steen Hegelund <Steen.Hegelund@...rochip.com>,
	<UNGLinuxDriver@...rochip.com>, Bjarni Jonasson
	<bjarni.jonasson@...rochip.com>
CC: <linux@...linux.org.uk>, <netdev@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net v2] net: sparx5: fix wrong config being used when
 reconfiguring PCS



On 4/9/2024 3:41 AM, Daniel Machon wrote:
> The wrong port config is being used if the PCS is reconfigured. Fix this
> by correctly using the new config instead of the old one.
> 
> Fixes: 946e7fd5053a ("net: sparx5: add port module support")
> Signed-off-by: Daniel Machon <daniel.machon@...rochip.com>
> ---

Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>

> Changes in v2:
> - Rewrite subject and commit description
> - Link to v1: https://lore.kernel.org/r/20240405-link-mode-reconfiguration-fix-v1-1-c1480bc2346a@microchip.com
> ---
>  drivers/net/ethernet/microchip/sparx5/sparx5_port.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_port.c b/drivers/net/ethernet/microchip/sparx5/sparx5_port.c
> index 3a1b1a1f5a19..60dd2fd603a8 100644
> --- a/drivers/net/ethernet/microchip/sparx5/sparx5_port.c
> +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_port.c
> @@ -731,7 +731,7 @@ static int sparx5_port_pcs_low_set(struct sparx5 *sparx5,
>  	bool sgmii = false, inband_aneg = false;
>  	int err;
>  
> -	if (port->conf.inband) {
> +	if (conf->inband) {
>  		if (conf->portmode == PHY_INTERFACE_MODE_SGMII ||
>  		    conf->portmode == PHY_INTERFACE_MODE_QSGMII)
>  			inband_aneg = true; /* Cisco-SGMII in-band-aneg */
> @@ -948,7 +948,7 @@ int sparx5_port_pcs_set(struct sparx5 *sparx5,
>  	if (err)
>  		return -EINVAL;
>  
> -	if (port->conf.inband) {
> +	if (conf->inband) {
>  		/* Enable/disable 1G counters in ASM */
>  		spx5_rmw(ASM_PORT_CFG_CSC_STAT_DIS_SET(high_speed_dev),
>  			 ASM_PORT_CFG_CSC_STAT_DIS,
> 
> ---
> base-commit: 1c25fe9a044d5334153a3585754b26553f8287b9
> change-id: 20240305-link-mode-reconfiguration-fix-df961fef5505
> 
> Best regards,