linux-kernel - Re: [Outreachy kernel] Re: [PATCH] staging: vt6655: Rename `dwAL2230InitTable` array

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Message-ID: <alpine.DEB.2.22.394.2110201615590.2930@hadrien>
Date:   Wed, 20 Oct 2021 16:16:42 +0200 (CEST)
From:   Julia Lawall <julia.lawall@...ia.fr>
To:     Joe Perches <joe@...ches.com>
cc:     Karolina Drobnik <karolinadrobnik@...il.com>,
        outreachy-kernel@...glegroups.com, gregkh@...uxfoundation.org,
        forest@...ttletooquiet.net, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [Outreachy kernel] Re: [PATCH] staging: vt6655: Rename
 `dwAL2230InitTable` array



On Wed, 20 Oct 2021, Joe Perches wrote:

> On Wed, 2021-10-20 at 06:44 -0700, Joe Perches wrote:
> > trivial suggestion:
> >
> > > diff --git a/drivers/staging/vt6655/rf.c b/drivers/staging/vt6655/rf.c
> > []
> > > @@ -33,7 +33,7 @@
> > >  #define SWITCH_CHANNEL_DELAY_AL7230 200 /* us */
> > >  #define AL7230_PWR_IDX_LEN    64
> > >
> > > -static const unsigned long dwAL2230InitTable[CB_AL2230_INIT_SEQ] = {
> > > +static const unsigned long al2230_init_table[CB_AL2230_INIT_SEQ] = {
> > >  	0x03F79000 + (BY_AL2230_REG_LEN << 3) + IFREGCTL_REGW,
> > >  	0x03333100 + (BY_AL2230_REG_LEN << 3) + IFREGCTL_REGW,
> > >  	0x01A00200 + (BY_AL2230_REG_LEN << 3) + IFREGCTL_REGW,
> >
> > In this file there are more than 100 uses of
> >
> > 	(BY_AL2230_REG_LEN << 3) + IFREGCTL_REGW
> >
> > Maybe add a define for it and substitute the uses for the define.
>
> Look at the code too.
>
> It looks as if every use of IFRFbWriteEmbedded() has this added to
> the 2nd argument and that the 2nd argument isn't used anywhere else.
>
> Maybe remove it altogether and add it to IFRFbWriteEmbedded().
>
> And it looks as if the + uses for these should logically be |
>
> Something like:
>
> diff --git a/drivers/staging/vt6655/rf.c b/drivers/staging/vt6655/rf.c
> index 0dae593c6944f..26803f6f9a27b 100644
> --- a/drivers/staging/vt6655/rf.c
> +++ b/drivers/staging/vt6655/rf.c
> @@ -498,7 +498,8 @@ bool IFRFbWriteEmbedded(struct vnt_private *priv, unsigned long dwData)
>         unsigned short ww;
>         unsigned long dwValue;
>
> -       VNSvOutPortD(iobase + MAC_REG_IFREGCTL, dwData);
> +       VNSvOutPortD(iobase + MAC_REG_IFREGCTL,
> +                    dwData | (BY_AL2230_REG_LEN << 3) | IFREGCTL_REGW);
>
>         /* W_MAX_TIMEOUT is the timeout period */
>         for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {

Karolina,

If more than a hundred such changes are necessary, you may find Coccinelle
useful:  https://coccinelle.gitlabpages.inria.fr/website/

julia


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