linux-kernel - Re: [PATCH v2 2/2] ethernet: eswin: Add eic7700 ethernet driver

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Message-ID: <aDcebRguDnM7sqVk@shell.armlinux.org.uk>
Date: Wed, 28 May 2025 15:32:13 +0100
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: weishangjuan@...incomputing.com
Cc: andrew+netdev@...n.ch, davem@...emloft.net, edumazet@...gle.com,
	kuba@...nel.org, pabeni@...hat.com, robh@...nel.org,
	krzk+dt@...nel.org, conor+dt@...nel.org, netdev@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	mcoquelin.stm32@...il.com, alexandre.torgue@...s.st.com,
	vladimir.oltean@....com, yong.liang.choong@...ux.intel.com,
	prabhakar.mahadev-lad.rj@...renesas.com, inochiama@...il.com,
	jan.petrous@....nxp.com, jszhang@...nel.org, p.zabel@...gutronix.de,
	0x1207@...il.com, boon.khai.ng@...era.com,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org, ningyu@...incomputing.com,
	linmin@...incomputing.com, lizhi2@...incomputing.com
Subject: Re: [PATCH v2 2/2] ethernet: eswin: Add eic7700 ethernet driver

On Wed, May 28, 2025 at 12:16:25PM +0800, weishangjuan@...incomputing.com wrote:
> +static struct clk *dwc_eth_find_clk(struct plat_stmmacenet_data *plat_dat,
> +				    const char *name)
> +{
> +	for (int i = 0; i < plat_dat->num_clks; i++)
> +		if (strcmp(plat_dat->clks[i].id, name) == 0)
> +			return plat_dat->clks[i].clk;
> +
> +	return NULL;
> +}

Okay, I think this driver is mindless copying of dwmac-dwc-qos-eth.c
between 24th February and 9th April 2025. I can say this because I added
this function to that driver and later removed it.

Looking at the rest of the code, I doubt this even does anything useful
(hence "mindless copying") as you're not fetching any clocks into this
array, and plat_dat->num_clks will be zero here. Thus, this will return
NULL. Therefore, you haven't thought about whether you need this or not,
but have just copied dwmac-dwc-qos-eth.c and then modified it until it
works for you.

You haven't acknowledged where you derived this code from - you've cut
the header of your source file out, and basically are claiming it to be
all your own work. I know this is rubbish for the reason I've stated
above. This is quite simply plagiarism. I am not impressed.

Thus I will end the review here, and simply state that this is not
acceptable.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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