linux-kernel - Re: [PATCH v2] iio: sx9324: avoid copying property strings

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Date: Sun, 17 Dec 2023 13:00:33 +0000
From: Jonathan Cameron <jic23@...nel.org>
To: Gwendal Grignou <gwendal@...omium.org>
Cc: Justin Stitt <justinstitt@...gle.com>, Stephen Boyd
 <swboyd@...omium.org>, Lars-Peter Clausen <lars@...afoo.de>,
 linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-hardening@...r.kernel.org
Subject: Re: [PATCH v2] iio: sx9324: avoid copying property strings

On Tue, 12 Dec 2023 15:51:04 -0800
Gwendal Grignou <gwendal@...omium.org> wrote:

> Reviewed-by: Gwendal Grignou <gwendal@...omium.org>
Hi Gwendal

I'll ignore this tag given the email you've replied to says there is a different
implementation. Please take a look at that version instead.

Jonathan

> 
> On Mon, Dec 11, 2023 at 4:46 PM Justin Stitt <justinstitt@...gle.com> wrote:
> >
> > Hi,
> >
> > On Mon, Oct 30, 2023 at 2:44 PM Stephen Boyd <swboyd@...omium.org> wrote:  
> > >
> > >
> > > We need to free it in other places too, like if the count doesn't match.
> > > It may be easier to extract this section and just have 4 string
> > > literals.
> > >
> > >         switch (reg_def->reg) {
> > >         case SX9324_REG_AFE_PH0:
> > >                 reg_def = sx9324_parse_phase_prop(dev, reg_def, "semtech,ph0-pin");
> > >                 break;
> > >         case SX9324_REG_AFE_PH1:
> > >                 reg_def = sx9324_parse_phase_prop(dev, reg_def, "semtech,ph1-pin");
> > >                 break;
> > >         case SX9324_REG_AFE_PH2:
> > >                 reg_def = sx9324_parse_phase_prop(dev, reg_def, "semtech,ph2-pin");
> > >                 break;
> > >         case SX9324_REG_AFE_PH3:
> > >                 reg_def = sx9324_parse_phase_prop(dev, reg_def, "semtech,ph3-pin");
> > >                 break;
> > >  
> >
> > I've submitted v3 of this patch [1] trying out Stephen's idea. I'd
> > appreciate feedback.
> >
> > [1]: https://lore.kernel.org/all/20231212-strncpy-drivers-iio-proximity-sx9324-c-v3-1-b8ae12fc8a5d@google.com/
> >
> > Thanks
> > Justin