netdev - 回复: [PATCH] drivers/thunder:improve-warning-message-in-device_for_each_child

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Message-ID:
 <SG2PR06MB3743BBB0CE4EDE9C9882DB23BD5BA@SG2PR06MB3743.apcprd06.prod.outlook.com>
Date: Thu, 15 Jun 2023 09:08:30 +0000
From: 王明-软件底层技术部 <machel@...o.com>
To: Yunsheng Lin <linyunsheng@...wei.com>
CC: Sunil Goutham <sgoutham@...vell.com>, "David S. Miller"
	<davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
	<kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, opensource.kernel
	<opensource.kernel@...o.com>
Subject:
 回复: [PATCH] drivers/thunder:improve-warning-message-in-device_for_each_child_node()

Thank you, some changes in this patch are format issues in checkpatch, the fix is to add fwnode_handle_put() before break, I will resubmit the new version patch.
:)

-----邮件原件-----
发件人: Yunsheng Lin <linyunsheng@...wei.com> 
发送时间: 2023年6月13日 20:53
收件人: 王明-软件底层技术部 <machel@...o.com>; Sunil Goutham <sgoutham@...vell.com>; David S. Miller <davem@...emloft.net>; Eric Dumazet <edumazet@...gle.com>; Jakub Kicinski <kuba@...nel.org>; Paolo Abeni <pabeni@...hat.com>; linux-arm-kernel@...ts.infradead.org; netdev@...r.kernel.org; linux-kernel@...r.kernel.org
抄送: opensource.kernel <opensource.kernel@...o.com>
主题: Re: [PATCH] drivers/thunder:improve-warning-message-in-device_for_each_child_node()

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On 2023/6/13 20:38, Wang Ming wrote:
> In device_for_each_child_node(), it should have fwnode_handle_put() 
> before break to prevent stale device node references from being left 
> behind.
>
> Signed-off-by: Wang Ming <machel@...o.com>

A Fixes tag seems necessary according to the commit log, and should target the net branch using:

[PATCH net] drivers/thunder: improve-warning-message-in-device_for_each_child_node()

Also it seems confusing the 'improve' in the title suggest that it is not a fix.

> ---
>  .../net/ethernet/cavium/thunder/thunder_bgx.c | 37 
> ++++++++++---------
>  1 file changed, 20 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c 
> b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
> index a317feb8d..d37ee2872 100644
> --- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
> +++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
> @@ -90,7 +90,7 @@ static const struct pci_device_id bgx_id_table[] = {
>
>  MODULE_AUTHOR("Cavium Inc");
>  MODULE_DESCRIPTION("Cavium Thunder BGX/MAC Driver"); 
> -MODULE_LICENSE("GPL v2");
> +MODULE_LICENSE("GPL");

Is there any reason you changing the license here?

>  MODULE_VERSION(DRV_VERSION);
>  MODULE_DEVICE_TABLE(pci, bgx_id_table);
>
> @@ -174,10 +174,10 @@ static struct bgx *get_bgx(int node, int 
> bgx_idx)  }
>
>  /* Return number of BGX present in HW */ -unsigned bgx_get_map(int 
> node)
> +unsigned int bgx_get_map(int node)

It seems to be unrelated change here, is the changing related to the problem you are fixing?

>  {
>         int i;
> -       unsigned map = 0;
> +       unsigned int map = 0;

Same here.

>
>         for (i = 0; i < max_bgx_per_node; i++) {
>                 if (bgx_vnic[(node * max_bgx_per_node) + i]) @@ -600,9 
> +600,9 @@ static void bgx_lmac_handler(struct net_device *netdev)
>                 link_changed = -1;
>
>         if (phydev->link &&
> -           (lmac->last_duplex != phydev->duplex ||
> -            lmac->last_link != phydev->link ||
> -            lmac->last_speed != phydev->speed)) {
> +               (lmac->last_duplex != phydev->duplex ||
> +               lmac->last_link != phydev->link ||
> +               lmac->last_speed != phydev->speed)) {

Same here.

>                         link_changed = 1;
>         }
>
> @@ -783,7 +783,7 @@ static int bgx_lmac_xaui_init(struct bgx *bgx, struct lmac *lmac)
>                 bgx_reg_write(bgx, lmacid, BGX_SPUX_BR_PMD_LD_REP, 0x00);
>                 /* training enable */
>                 bgx_reg_modify(bgx, lmacid,
> -                              BGX_SPUX_BR_PMD_CRTL, SPU_PMD_CRTL_TRAIN_EN);
> +                                        BGX_SPUX_BR_PMD_CRTL, 
> + SPU_PMD_CRTL_TRAIN_EN);

Same here.
Please make sure it only contain change related to fixing the problem.