linux-kernel - Re: [PATCH v2 1/9] mfd: cs5535-mfd: Use PLATFORM_DEVID

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Date:   Mon, 21 Oct 2019 12:35:29 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Daniel Thompson <daniel.thompson@...aro.org>
Cc:     arnd@...db.de, broonie@...nel.org, linus.walleij@...aro.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        baohua@...nel.org, stephan@...hold.net
Subject: Re: [PATCH v2 1/9] mfd: cs5535-mfd: Use PLATFORM_DEVID_* defines and
 tidy error message

On Mon, 21 Oct 2019, Lee Jones wrote:

> On Mon, 21 Oct 2019, Daniel Thompson wrote:
> 
> > On Mon, Oct 21, 2019 at 11:58:14AM +0100, Lee Jones wrote:
> > > In most contexts '-1' doesn't really mean much to the casual observer.
> > > In almost all cases, it's better to use a human readable define.  In
> > > this case PLATFORM_DEVID_* defines have already been provided for this
> > > purpose.
> > > 
> > > While we're here, let's be specific about the 'MFD devices' which
> > > failed.  It will help when trying to distinguish which of the 2 sets
> > > of sub-devices we actually failed to register.
> > 
> > No objections... but won't the tag added by dev_err() already
> > disambiguate?
> 
> The difference will be between CS5532 and  CS5532 OLPC.
> 
> Please see patch 4 in the series.
> 
> > > Signed-off-by: Lee Jones <lee.jones@...aro.org>
> > > ---
> > >  drivers/mfd/cs5535-mfd.c | 5 +++--
> > >  1 file changed, 3 insertions(+), 2 deletions(-)
> > > 
> > > diff --git a/drivers/mfd/cs5535-mfd.c b/drivers/mfd/cs5535-mfd.c
> > > index f1825c0ccbd0..2c47afc22d24 100644
> > > --- a/drivers/mfd/cs5535-mfd.c
> > > +++ b/drivers/mfd/cs5535-mfd.c
> > > @@ -127,10 +127,11 @@ static int cs5535_mfd_probe(struct pci_dev *pdev,
> > >  		cs5535_mfd_cells[i].id = 0;
> > >  	}
> > >  
> > > -	err = mfd_add_devices(&pdev->dev, -1, cs5535_mfd_cells,
> > > +	err = mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE, cs5535_mfd_cells,
> > >  			      ARRAY_SIZE(cs5535_mfd_cells), NULL, 0, NULL);
> > >  	if (err) {
> > > -		dev_err(&pdev->dev, "MFD add devices failed: %d\n", err);
> > > +		dev_err(&pdev->dev,
> > > +			"Failed to add CS5532 sub-devices: %d\n", err);
> > 
> >                                            ^^^
> > 
> > Typo (and MODULE_DESCRIPTION() says this is a driver for CS5536 too).
> > Once that is fixed:
> > Reviewed-by: Daniel Thompson <daniel.thompson@...aro.org>
> 
> Ta.

Looks like this comes from the failed message from the
mfd_add_devices() above.  I'll fix both.

-- 
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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