linux-kernel - Re: [PATCH AUTOSEL 5.19 028/105] net: make xpcs_do_config to accept advertising for pcs-xpcs and sja1105

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Message-ID: <YvUid/JRA4s/S9Cr@shell.armlinux.org.uk>
Date:   Thu, 11 Aug 2022 16:38:31 +0100
From:   "Russell King (Oracle)" <linux@...linux.org.uk>
To:     Sasha Levin <sashal@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Ong Boon Leong <boon.leong.ong@...el.com>,
        kernel test robot <lkp@...el.com>,
        "David S . Miller" <davem@...emloft.net>, olteanv@...il.com,
        andrew@...n.ch, vivien.didelot@...il.com, f.fainelli@...il.com,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        Jose.Abreu@...opsys.com, hkallweit1@...il.com,
        netdev@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 5.19 028/105] net: make xpcs_do_config to accept
 advertising for pcs-xpcs and sja1105

Hi,

Why are the stable kernels picking up this development commit? I don't
see you picking up the commits that actually make use of this new
parameter.

Maybe stable folk can tell me which of the rules listed in
Documentation/process/stable-kernel-rules.rst that this patch conforms
with that makes it eligable for stable kernels. Thanks.

Russell.

On Thu, Aug 11, 2022 at 11:27:12AM -0400, Sasha Levin wrote:
> From: Ong Boon Leong <boon.leong.ong@...el.com>
> 
> [ Upstream commit fa9c562f9735d24c3253747eb21f3f0c0f6de48e ]
> 
> xpcs_config() has 'advertising' input that is required for C37 1000BASE-X
> AN in later patch series. So, we prepare xpcs_do_config() for it.
> 
> For sja1105, xpcs_do_config() is used for xpcs configuration without
> depending on advertising input, so set to NULL.
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Signed-off-by: Ong Boon Leong <boon.leong.ong@...el.com>
> Signed-off-by: David S. Miller <davem@...emloft.net>
> Signed-off-by: Sasha Levin <sashal@...nel.org>
> ---
>  drivers/net/dsa/sja1105/sja1105_main.c | 2 +-
>  drivers/net/pcs/pcs-xpcs.c             | 6 +++---
>  include/linux/pcs/pcs-xpcs.h           | 2 +-
>  3 files changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c
> index 698c7d1fb45c..b03d0d0c3dbf 100644
> --- a/drivers/net/dsa/sja1105/sja1105_main.c
> +++ b/drivers/net/dsa/sja1105/sja1105_main.c
> @@ -2330,7 +2330,7 @@ int sja1105_static_config_reload(struct sja1105_private *priv,
>  		else
>  			mode = MLO_AN_PHY;
>  
> -		rc = xpcs_do_config(xpcs, priv->phy_mode[i], mode);
> +		rc = xpcs_do_config(xpcs, priv->phy_mode[i], mode, NULL);
>  		if (rc < 0)
>  			goto out;
>  
> diff --git a/drivers/net/pcs/pcs-xpcs.c b/drivers/net/pcs/pcs-xpcs.c
> index d25fbb9caeba..b17908a0b27c 100644
> --- a/drivers/net/pcs/pcs-xpcs.c
> +++ b/drivers/net/pcs/pcs-xpcs.c
> @@ -795,7 +795,7 @@ static int xpcs_config_2500basex(struct dw_xpcs *xpcs)
>  }
>  
>  int xpcs_do_config(struct dw_xpcs *xpcs, phy_interface_t interface,
> -		   unsigned int mode)
> +		   unsigned int mode, const unsigned long *advertising)
>  {
>  	const struct xpcs_compat *compat;
>  	int ret;
> @@ -843,7 +843,7 @@ static int xpcs_config(struct phylink_pcs *pcs, unsigned int mode,
>  {
>  	struct dw_xpcs *xpcs = phylink_pcs_to_xpcs(pcs);
>  
> -	return xpcs_do_config(xpcs, interface, mode);
> +	return xpcs_do_config(xpcs, interface, mode, advertising);
>  }
>  
>  static int xpcs_get_state_c73(struct dw_xpcs *xpcs,
> @@ -864,7 +864,7 @@ static int xpcs_get_state_c73(struct dw_xpcs *xpcs,
>  
>  		state->link = 0;
>  
> -		return xpcs_do_config(xpcs, state->interface, MLO_AN_INBAND);
> +		return xpcs_do_config(xpcs, state->interface, MLO_AN_INBAND, NULL);
>  	}
>  
>  	if (state->an_enabled && xpcs_aneg_done_c73(xpcs, state, compat)) {
> diff --git a/include/linux/pcs/pcs-xpcs.h b/include/linux/pcs/pcs-xpcs.h
> index 266eb26fb029..37eb97cc2283 100644
> --- a/include/linux/pcs/pcs-xpcs.h
> +++ b/include/linux/pcs/pcs-xpcs.h
> @@ -30,7 +30,7 @@ int xpcs_get_an_mode(struct dw_xpcs *xpcs, phy_interface_t interface);
>  void xpcs_link_up(struct phylink_pcs *pcs, unsigned int mode,
>  		  phy_interface_t interface, int speed, int duplex);
>  int xpcs_do_config(struct dw_xpcs *xpcs, phy_interface_t interface,
> -		   unsigned int mode);
> +		   unsigned int mode, const unsigned long *advertising);
>  void xpcs_get_interfaces(struct dw_xpcs *xpcs, unsigned long *interfaces);
>  int xpcs_config_eee(struct dw_xpcs *xpcs, int mult_fact_100ns,
>  		    int enable);
> -- 
> 2.35.1
> 
> 

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