netdev - Re: [PATCH] net: txgbe: fix clk_name exceed MAX_DEV

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Message-ID: <ZfGDai79gJ2IGA1O@localhost.localdomain>
Date: Wed, 13 Mar 2024 11:43:54 +0100
From: Michal Kubiak <michal.kubiak@...el.com>
To: Duanqiang Wen <duanqiangwen@...-swift.com>
CC: <netdev@...r.kernel.org>, <mengyuanlou@...-swift.com>,
	<davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
	<pabeni@...hat.com>, <maciej.fijalkowski@...el.com>, <andrew@...n.ch>,
	<wangxiongfeng2@...wei.com>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] net: txgbe: fix clk_name exceed MAX_DEV_ID limits

On Wed, Mar 13, 2024 at 04:06:34PM +0800, Duanqiang Wen wrote:
> txgbe register clk which name is i2c_designware.pci_dev_id(),
> clk_name will be stored in clk_lookup_alloc. If PCIe bus number
> is larger than 0x39, clk_name size will be larger than 20 bytes.
> It exceeds clk_lookup_alloc MAX_DEV_ID limits. So the driver
> shortened clk_name.
> 
> Fixes: b63f20485e43 ("net: txgbe: Register fixed rate clock")
> Signed-off-by: Duanqiang Wen <duanqiangwen@...-swift.com>
> ---
>  drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
> index 93295916b1d2..5b5d5e4310d1 100644
> --- a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
> +++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c
> @@ -571,7 +571,7 @@ static int txgbe_clock_register(struct txgbe *txgbe)
>  	char clk_name[32];
>  	struct clk *clk;
>  
> -	snprintf(clk_name, sizeof(clk_name), "i2c_designware.%d",
> +	snprintf(clk_name, sizeof(clk_name), "i2c_dw.%d",
>  		 pci_dev_id(pdev));
>  
>  	clk = clk_register_fixed_rate(NULL, clk_name, NULL, 0, 156250000);
> -- 
> 2.27.0
> 
> 


I believe the patch is targeted to the "net" tree?
If so, the fix looks OK to me.


Thanks,
Reviewed-by: Michal Kubiak <michal.kubiak@...el.com>