linux-kernel - RE: [PATCH] Add Silicom Platform Driver

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Date:   Tue, 8 Aug 2023 20:39:14 +0000
From:   Huibin Shi <henrys@...icom-usa.com>
To:     Guenter Roeck <linux@...ck-us.net>,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Henry Shi <henryshi2018@...il.com>,
        "hbshi69@...mail.com" <hbshi69@...mail.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "bp@...en8.de" <bp@...en8.de>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
        "x86@...nel.org" <x86@...nel.org>, "hpa@...or.com" <hpa@...or.com>,
        "hdegoede@...hat.com" <hdegoede@...hat.com>,
        "markgross@...nel.org" <markgross@...nel.org>,
        "jdelvare@...e.com" <jdelvare@...e.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "platform-driver-x86@...r.kernel.org" 
        <platform-driver-x86@...r.kernel.org>,
        "linux-hwmon@...r.kernel.org" <linux-hwmon@...r.kernel.org>
CC:     "hb_shi2003@...oo.com" <hb_shi2003@...oo.com>,
        Wen Wang <wenw@...icom-usa.com>
Subject: RE: [PATCH] Add Silicom Platform Driver

I mean this is the kernel implementation of devm_kmemdup() function in /driver/base/devres.c. 

Henry
-----Original Message-----
From: Guenter Roeck <groeck7@...il.com> On Behalf Of Guenter Roeck
Sent: Tuesday, August 8, 2023 3:36 PM
To: Huibin Shi <henrys@...icom-usa.com>; Christophe JAILLET <christophe.jaillet@...adoo.fr>; Henry Shi <henryshi2018@...il.com>; hbshi69@...mail.com; tglx@...utronix.de; mingo@...hat.com; bp@...en8.de; dave.hansen@...ux.intel.com; x86@...nel.org; hpa@...or.com; hdegoede@...hat.com; markgross@...nel.org; jdelvare@...e.com; linux-kernel@...r.kernel.org; platform-driver-x86@...r.kernel.org; linux-hwmon@...r.kernel.org
Cc: hb_shi2003@...oo.com; Wen Wang <wenw@...icom-usa.com>
Subject: Re: [PATCH] Add Silicom Platform Driver

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On 8/8/23 12:19, Huibin Shi wrote:
> Guenter,
>
> Here is the implementation of  devm_kmemdup(), *src is the extra 
> argument
>
> void *devm_kmemdup(struct device *dev, const void *src, size_t len, 
> gfp_t gfp) {
>       void *p;
>
>       p = devm_kmalloc(dev, len, gfp);
>       if (p)
>               memcpy(p, src, len);
>
>       return p;
> }
>

So you don't want to use devm_kmemdup() because of its 'src' argument, and instead re-implement it locally by using devm_kzalloc() followed by memcpy() ? Really ?

Guenter