linux-kernel - Re: [PATCH 1/2] iio: adc: ti-ads1298: Fix error code in probe()

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Date: Sat, 24 Feb 2024 18:13:54 +0000
From: Jonathan Cameron <jic23@...nel.org>
To: Mike Looijmans <mike.looijmans@...ic.nl>
Cc: Dan Carpenter <dan.carpenter@...aro.org>, Lars-Peter Clausen
 <lars@...afoo.de>, Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
 linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
 kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 1/2] iio: adc: ti-ads1298: Fix error code in probe()

On Thu, 22 Feb 2024 08:10:25 +0100
Mike Looijmans <mike.looijmans@...ic.nl> wrote:

> Good catch on both patches.
> 
> If so desired, you have my
> 
> Acked-by: Mike Looijmans <mike.looijmans@...ic.nl>

Dan, here is a classic example of why I think any series with more than
1 patch could benefit from a cover letter. It gives somewhere for
reviewers to give tags for the lot in a fashion b4 can understand.

Otherwise great find and applied to the togreg branch of iio.git
with Mike's tag added to both of them!  Hopefully the fixes tags will
remain stable - whilst in theory that tree doesn't get rebased, in practice
it might if I messed anything up enough :( 

Thanks

Jonathan


> 
> 
> 
> On 22-02-2024 07:14, Dan Carpenter wrote:
> > There is a copy and paste bug here, it should be "reg_vref" instead of
> > "reg_avdd".  The "priv->reg_avdd" variable is zero so it ends up
> > returning success.
> >
> > Fixes: 00ef7708fa60 ("iio: adc: ti-ads1298: Add driver")
> > Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
> > ---
> >   drivers/iio/adc/ti-ads1298.c | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/iio/adc/ti-ads1298.c b/drivers/iio/adc/ti-ads1298.c
> > index ed895a30beed..67637f1abdc7 100644
> > --- a/drivers/iio/adc/ti-ads1298.c
> > +++ b/drivers/iio/adc/ti-ads1298.c
> > @@ -657,7 +657,7 @@ static int ads1298_probe(struct spi_device *spi)
> >   	priv->reg_vref = devm_regulator_get_optional(dev, "vref");
> >   	if (IS_ERR(priv->reg_vref)) {
> >   		if (PTR_ERR(priv->reg_vref) != -ENODEV)
> > -			return dev_err_probe(dev, PTR_ERR(priv->reg_avdd),
> > +			return dev_err_probe(dev, PTR_ERR(priv->reg_vref),
> >   					     "Failed to get vref regulator\n");
> >   
> >   		priv->reg_vref = NULL;  
> 
>