Re: [PATCH 3/7] ASoC: cs35l45: Checks index of cs35l45_irqs[]

[Vlad Karpovich <vkarpovi@opensource.cirrus.com>]

On Tue, 29 Aug 2023 10:07:51 +0000
Charles Keepax <ckeepax@opensource.cirrus.com> wrote:

> On Mon, Aug 28, 2023 at 12:05:21PM -0500, Vlad Karpovich wrote:
> > Checks the index computed by the virq offset before printing the
> > error condition in cs35l45_spk_safe_err() handler.
> > 
> > Signed-off-by: Ricardo Rivera-Matos <rriveram@opensource.cirrus.com>
> > Signed-off-by: Vlad Karpovich <vkarpovi@opensource.cirrus.com>
> > ---
> >  sound/soc/codecs/cs35l45.c | 5 ++++-
> >  1 file changed, 4 insertions(+), 1 deletion(-)
> > 
> > diff --git a/sound/soc/codecs/cs35l45.c b/sound/soc/codecs/cs35l45.c
> > index 40fb64904260..2c9b41171a05 100644
> > --- a/sound/soc/codecs/cs35l45.c
> > +++ b/sound/soc/codecs/cs35l45.c
> > @@ -1023,7 +1023,10 @@ static irqreturn_t cs35l45_spk_safe_err(int irq, void *data)
> >  
> >  	i = irq - regmap_irq_get_virq(cs35l45->irq_data, 0);
> >  
> > -	dev_err(cs35l45->dev, "%s condition detected!\n", cs35l45_irqs[i].name);
> > +	if (i < 0 || i > 6)
> 
> This looks a little odd, there appear to be 8 IRQs attached to
> this function whereas this says 6. Also this check seems like
> it will be hard to keep in sync as things change.
> 
> Assuming this error check is actually necessary, would it be
> perhaps better to check i is smaller than ARRAY_SIZE(cs35l45_irqs)
> and check that the attached function is cs35l45_spk_safe_err.
> That should be more robust against future changes to the IRQs.
> 
> Thanks,
> Charles
Thank you. It was picked up from a different branch,I will change to ARRAY_SIZE.

-- 
Vlad Karpovich <vkarpovi@opensource.cirrus.com>