linux-kernel - RE: [PATCH net-next v6 1/2] net/ethernet/realtek: Add Realtek automotive PCIe driver code

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Message-ID: <5ae1444b03f64e7287fc7abb6cd56063@realtek.com>
Date:   Wed, 23 Aug 2023 14:28:20 +0000
From:   Justin Lai <justinlai0215@...ltek.com>
To:     Andrew Lunn <andrew@...n.ch>
CC:     "kuba@...nel.org" <kuba@...nel.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "jiri@...nulli.us" <jiri@...nulli.us>
Subject: RE: [PATCH net-next v6 1/2] net/ethernet/realtek: Add Realtek automotive PCIe driver code

> 
> > +     do {
> > +             status = RTL_R32(tp, ivec->isr_addr);
> > +
> > +             handled = 1;
> > +             RTL_W32(tp, ivec->imr_addr, 0x0);
> > +             RTL_W32(tp, ivec->isr_addr, (status & ~FOVW));
> > +
> > +             if ((status & ivec->imr)) {
> > +                     if (likely(napi_schedule_prep(&ivec->napi)))
> > +                             __napi_schedule(&ivec->napi);
> > +             }
> > +     } while (false);
> 
> Remember i said that if you do something which no other network driver does,
> it is probably wrong. How many drivers have a do {} while (false); loop?
> 
> Please spend a few days just reading other drivers, and compare your code
> with those drivers. Try to find all the things your driver does which no other
> driver has. That code is probably wrong and you should fix it.
> 
>         Andrew
> 
Thank you for your suggestions, I will read other drivers and modify some problems of this driver.